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The first time I saw an Air-Way upright was in the mid-1970s. Someone had left a straight-suction model at the curb across the street. I was tremendously fascinated, of course, and brought it home. Mama was afraid it had cooties in it or would catch on fire or cause an electrical short so she forbid me from bringing it in the house or running it. I had to play with it in the basement.
The first canister-type Air-Way I recall seeing was in the mid-1960s. It was a Sanitozer Model 77 that a neighbor lady had. She used it horizontally on the floor rather than standing upright. I thought it was very strange looking with its four runners.