DirtMasteR
The DirtMasteR was made in two different versions, and they made it for almost four years. It cost less than a twin motor (Super Chief) model. It was the VERY FIRST twin fan upright in the world. Singer would later copy that feature. It was also the VERY FIRST side mounted hose for attachments (Hoover would copy that feature 2 years after the DirtMasteR launch for the 150).
Air-Way would have continued to make that machine, except for the fact that they lost the lawsuit from Hoover over the beater bars.
At the time of the DirtMasteR, Air-Way was also making the Twin Motor Super Chief, as well as the Green Godess deluxe upright (straight suction) and well as the standard straight suction upright. So, the customer had 4 uprights to chose from. Since it was the middle of depression, most of the salesmen just took in the standard $69 upright, because getting the customer to buy anyting at that time in history was like pulling teeth. In 1937, the Sanitizor was launched, and the rest, as they say, is history. Air-Way actually sold MORE Sanitizor 55's than Electrolux sold model XXX's.