It's definitely a Sanyo. We had a similar line of "dust cassette" vacs in Canada in the early 1970's. They came in dark blue and red - the red one actually had a transparent red dust cassette.
The big clue to who made them is the tool set: our blue Sanyo had the identical carpet/bare floor nozzle, and the same "side to side" sweep upholstery nozzle. Ours had an electrified hose so that you could turn on the vac at the hose handle!!!!
Powerful and quiet!!!!
