Just two additional comments about the Regina company:
I think their Regina Housekeeper upright - though not a great performer - was the very first upright on the market to feature an on-board hose ready to use for above the floor cleaning. Not sure if a European company beat them to it on being the first, but for sure they were first in North America.
Secondly, the history of the company in Canada seems to be different from the history in the USA. I may be wrong, but we seem to have had Regina vacs that were not available in the USA - made at the Switson factory in Welland, Ontario.