My grandparents had a Zenith electric range. Bought just before WWII. Lasted til about 1979. 3 burner, deepwell one oven and 3 storage drawers. So, who made those, I wonder?
Apex is right, they made Zenith washers and dryers (and probably wringers) up until Apex closed in '58. They were agitator machines, not bouncing basket.