Guide for Patent Dates

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kc_kirby

Well-known member
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Hello everyone, my father gave me a little card with patent numbers and the approximate date of the patent. I thought some of you might like to know when some or your old vacuums were patented. My dad got this from an auction company I believe. To use it find the largest patent number on the item and then compare it to the list. Enjoy!

Chad Cunningham

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Ralph A. W. Johanson Patents assigned to Electrolux Corp.

Chad,

Looks like you're still around, so a long-belated thanks to you and your dad for this information.

____________

Patent Screenshots (all assigned to Electrolux Corporation); Mr. Johanson also invented the Model C.A., which I posted on thread #45649

1. US-3401952A Anti-Tipping Rollers
2. US-D192160S Rug Cleaner Nozzle
3. US-D195717S Rug Washer
4. US-D201679S Plug Body
5. US-D211841S Rug Washer holder, carrier, drip tray
6-7. US-D216275S Model 1205

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Electrolux Corporation '20s, '30s & '40s

1. (Dusting Brush) Suction Cleaner Nozzle 1927/1932 - A O Engberg et. al.
2. Vacuum Cleaner 1937/1940 - J E V Edstrom
3-4. (Corner) Suction Nozzle 1939/1941 - G E Lofgren
5. (Rug) Suction Nozzle 1940/1942 - G A Peterson
6. Pipe Joint 1945/1950 - G A Peterson
7. (Rug) Suction Nozzle 1941/1943 - C L Brown, Jr.
8. Vacuum Cleaner 1938/1940 - J E V Edstrom
9-10. (Upholstery) Suction Cleaner Nozzle 1927/1932 - A O Engberg, et. al.
11-13. Carrying Device 1926/1934 - A O Engberg, et. al.
14. Vacuum Cleaner 1940/1943 - F C Doughman
15. Electric motor 1937/1940 - F C Doughman
16-18. Vacuum Cleaner - G E Lofgren
19-20. Vacuum Cleaner - G E Lofgren

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Electrolux Corporation - (Models E, E-A, T, F, S)

Inventors in Alphabetical Order by Surname ...

O L Allen
A H Beede
M E Belicka
H W Beundage
A P Cawl
L V A Guild
R C Lampe
G E Lofgren
G W Norrick


Patents In Chronological Order by Filing (some may have been inadvertently omitted; and one I was unable to locate was the E-A stabilizer; attachments not included)...

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Electrolux patents

Some very clever ideas here that were not always produced.Many ahead of their time as with--
--reply 3,photo 2-Having suction and blower from one hose connection was seen on a rare Singer canister from the 60s.
--reply 3,photo 9-10--Having an attachment 'built in' to the hose end was seen on one of the last deluxe Kenmore canisters.
 
You're welcome, Alex; glad to hear that.

Thanks for your background knowledge as always, Jimmy.
 
Electrolux Corporation - patent observations

I've noticed that most of the patent numbers listed on cleaners are for parts sometimes used on many different prior models.

The ones beginning with 'D' are design patents that are often reused for several models even though some changes have been made. For example according to the patent listings on the cleaners, the models E, E-A, S, R, and L (excluding the Model T's unique construction) have the same design patent as do the models 1205, 1205 50th Jubilee, and 1401. Even the models 1401-B and 1453 appear to share the same design patent as no design patent was listed on the 1453's cover.

Correspondingly, I have been unable to locate patents with images for the later feature variations such as the covers, switches, handles, et cetera; although I only perused patents with images.

In addition, no patent numbers at all have been listed on the bag doors of the plastic-bodied model 2100 variants (e.g. Hi-Tech 2100, L-E, Model 90, Ambassador, Epic 6500SR ... ), which may be due to the fact that the design originated in Canada. These would have required a US patent as I've noticed for other models, but apparently listing them on products is optional.
 
Electrolux Corporation - Models 1401-B, 1453, 1521, CB2000

Just located the Model 1453 patent. I had no idea that it was launched in 1981; I had always thought it was around the time of the Olympia One's debut. That may indicate that the Model L was marketed until that time, or that Electrolux had ended the budget model option for a time and then reinstated it.

Due to the upload limit, I've posted only a few representative images of the CB2000.

The wands, a separate patent, were likely used for both household and commercial cleaners.

I was unable to locate a patent for the L-shaped power nozzle itself.



Photos (note - at that time only the years the patents were granted were included on the image pages; production likely began during the filing years shown on the details pages included):

1-3. Olympia One model 1401-B (and Silverado Deluxe 1505)

4-6. Deluxe Special Model 1453 & cord winder

7-11. Model 1521 (Diamond Jubilee, Marquise, Grand Marquise, Legacy, Ultralux, Ultralux LX, Ultralux Classic)

12-16. Model CB 2000

17-19. Wand

20. Self-Cleaning Joint (elbow for PN5, PN6, PN7)

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Alex and other Electrolux Corporation enthusiasts,

Here's the link to the Google patent search I've set up to search for Electrolux Corporation filed patents from 1933-1949. I've just been selecting ones I thought would be of the most interest, but you'd probably like to see them all.

https://patents.google.com/?assigne...ority:19500101&after=priority:19330101&page=9

Here are the latest ones I've copied from that era (filing/granted):

1. 1938/41 Floor Nozzle

2. 1938/41 Sprayer

3. 1938/39 Suction Control accessory

4. 1939/42 (Model XXX) cord holder

5-6. 1941/43 (Model XXX) latch

7. 1941/43 (Model XX) Vacuum Cleaner

8. 1941/43 (Rug & Carpet) Nozzle

9. 1948/52 Floor Polisher

10. 1949/52 Self-Sealing Receptacle (only 1 sheet copied)

11. 1949/53 (Model XXX Companion) tool holder

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Electrolux Corporation - 1950s Patent Filings (selected)

1. 1956/1959 Model E-A Resilient Wheels

2. 1954/1947 Dusting Brush/Upholstery Tool

3-4. 1956/1959 Multi-Stage Fans

5-6. 1959/1962 (Model B-7 Polisher-Scrubber) Brushes with Steel Wool Pad Cut-Outs

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Electrolux Corporation - 1960s Patent Filings (selected)

I have been unable to locate the Model CB patent so far.

1. 1960/1960 (Model PN-1) Power Nozzle

2-5. 1961/1963 Hose-Tug Cover Switch

6-7. 1962/1963 Updated Dusting Brush/Upholstery Tool

8. 1962/1965 Hose Restrainer

9-11. Hose Repair or Replacement Cord Straps

12. Standard Floor Nozzle

13. Wide Floor Nozzle

14. Electric Male Plug with Reinforced Blades

15-17. Improved Electric Hose Fittings

18-20. 1966/1968 (Model B-8) Sudser Shield (until now, I'd thought that the Carpet Beautifer debuted in 1965)

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Electrolux Corporation - '60s-'70s Patent Filings (s

(filing/granted)

1. 1961/1962 Model G

2. 1968/1971 Electric Hose Fittings

3-7. 1979/1971 Electric Hose

8-9. 1971/1973 Electric Hose Electrostatic Discharge Safety

10. 1971/1975 Electric Motor Brush Assembly

11-12. 1975/1976 (Model CB) Safety Plug

13-14. 1976/1978 Quick-Release Wand

15-19. 1976/1978 Heavy-Duty Upright Model 1363

20. 1977/1977 Model 1363 Quick-Release Storage Hook

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Electrolux Corporation - 1970s Patent Filings (selected)

(filing/granted)

1-6. 1977/1978 (Models 1363 & 1363B) Magnetic Drive for Agitator Brush

7-8. 1977/1978 (Models 1363 & 1363B) Hose Coupling

9-10. 1977/1979 (Tank & Canister) Safety Hose Coupling

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Electrolux Corporation - 1930s Filings (sel.)

Filed/Granted

1. 1935/1935 - E G Ahnstrom - tank casing

2. 1935/1936 - N Bel Geddes - tank casing

3. 1935/1936 - G E Lofgren - tank casing

4. 1935/1936 - G E Lofgren - tank casing

5-8. 1937/1937 - L Guild - Model XXX tank casing

9-10. 1937/1941 - C L Brown, Jr. - Model XXX tank

11-13. 1938/1940 - G E Lofgren, C L Brown, Jr. - Model XXX tank

14. 1938/1941 - A A Forsberg - Floor Nozzle

15-16. 1938/1941 - G E Lofgren - Model XXX tank

17. 1939/1942 - G E Lofgren - Model XXX cord holder

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Electrolux Corp. More 1940s Filings (sel.)

Filed/Granted

1. 1940/1943 Model XXX tank

2. 1942/1947: Model XXX cord holder end cap

3. 1945/1949 - Dirt Trapping Device

4. 1945/1951 - Model XXX dust bag

5. 1948/1949 - -C O Ernolf, Swedish inventor - tank

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Electrolux Corporation - Model LX Pat. Filings 1950-52

Some features in these initial designs were not used in the final.

Mr. Ferraris would later invent the 1981 Deluxe Special Model casing design; perhaps his last for Electrolux.

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