Please add photos and information to consolidate the Sanitaire brand history, including model specifics.
Attached is a reproduction of an October 1941 ad in the MINNEAPOLIS TRIBUNE (the only one I was able to find on my library's e-newspaper database) and an enlarged copy of the 1969, 1970 Sanitaire brochure (green line?) posted on thread 35776 by TheSpiritof76.
Below is a timeline of the Sanitaire trademark history at uspto.report (Unite States Patent Office) followed by the model list of blue and red lines at hescoinc.com. Apparently, these were launched in 1972.
USPTO Trademarks › National Union Electric Corporation › Sanitaire Application #72195008
Timeline
1939-11-16 Date of First Use
1964-06-05 Application Filed
1965-03-30 Trademark Registered
2015-03-30 Location: GENERIC WEB UPDATE
2015-03-30 Renewal Date
2015-03-30 Status: Live/Registered
2019-07-31 Transaction Date
_______
Model List (1972-present)
Blue Line: SC679, SC684, SC684E, SC689, SC886, SC887, SC887A, SC888, SC899, S634, and S647
Red Line: SC684F-2, SC684F-3, SC689A-2, SC689A-3, SC886E, SC886E-1, SC886E-2, SC886E-3, SC887B-2, SC887B-3
Eureka also made special edition F&G uprights for Kmart. These are easy to identify because they all had 3 digit model numbers. They were not rebranded with the Kmart name....they just had unique colours that could only be found in Kmart stores. If you search for "Eureka vacuum ads Kmart", you will see some of these models.


Attached is a reproduction of an October 1941 ad in the MINNEAPOLIS TRIBUNE (the only one I was able to find on my library's e-newspaper database) and an enlarged copy of the 1969, 1970 Sanitaire brochure (green line?) posted on thread 35776 by TheSpiritof76.
Below is a timeline of the Sanitaire trademark history at uspto.report (Unite States Patent Office) followed by the model list of blue and red lines at hescoinc.com. Apparently, these were launched in 1972.
USPTO Trademarks › National Union Electric Corporation › Sanitaire Application #72195008
Timeline
1939-11-16 Date of First Use
1964-06-05 Application Filed
1965-03-30 Trademark Registered
2015-03-30 Location: GENERIC WEB UPDATE
2015-03-30 Renewal Date
2015-03-30 Status: Live/Registered
2019-07-31 Transaction Date
_______
Model List (1972-present)
Blue Line: SC679, SC684, SC684E, SC689, SC886, SC887, SC887A, SC888, SC899, S634, and S647
Red Line: SC684F-2, SC684F-3, SC689A-2, SC689A-3, SC886E, SC886E-1, SC886E-2, SC886E-3, SC887B-2, SC887B-3
Eureka also made special edition F&G uprights for Kmart. These are easy to identify because they all had 3 digit model numbers. They were not rebranded with the Kmart name....they just had unique colours that could only be found in Kmart stores. If you search for "Eureka vacuum ads Kmart", you will see some of these models.

