hygiene903
Jeff,
If I know right, Electro-Hygiene was initially established in 1934 and its first machine, the model 80, incorporated several improvements over the Royal clone Health-Mor Sanitation System. But... the HM Sanitation System continued being built by Royal until 1939, when HM decided to go out on its own with the model 200 canister, which was to be the first Filter Queen brand machine (although Royal continued to manufacture the Filter Queen for HM until 1953).
~Ben[this post was last edited: 7/9/2022-17:36]