Thanks, John.
Timeline Of First Vacuum Cleaner Company Models To Use Standard Disposable Bags
1920 - Airway Sanitary System
1929 - Hoover upright model 725 - Hygienisac reusable bag
1949 - Royal upright model 279 and tank-type model 290
1949 - Westinghouse Deluxe floor-type model F-3 & tank-type model T-3
1950 - Hoover Aero-Dyne tank-type model 41
1950 - Lewyt canister model 44
195? - Universal upright model VC5708 & Clean Air tank-type model VC670_
1952 - Electrolux Corporation tank-type model LX
1952 - G-E swivel-top canister model AVC 815
1953 - Kenmore Ken-Kart & canister
1955 - Eureka Super Automatic upright model S-255
1956 - Eureka Super Roto-Matic canister model 910
1956 - Singer canister model C1 (made by Eureka)
1956 - Sunbeam Dual Deluxe canister model 630
195? - Hamilton Beach canister model 35 Deep Clean
1957 - Electrolux (Canada) Ltd. 80-series tank-type models
1965 - AB Electrolux tank-type model ZC90 & Trident tank-type model U136
1979 - Kirby Classic Series upright model 3-CB
Below is an interesting 1950 NYT article that mentions paper bags. An interesting side note is that it refers to two types of tank vacuum cleaners - horizontal and vertical - instead of distinguishing between tank and canister.
