It's a toss-up between the late 40's GE single door fridge, the late 40's Sunbeam Mixmaster, and the late 40's Electrolux canister vacuum cleaner.
The house was built in '41 but the kitchen was remodeled in 1965, and the appliances were updated again in the 1970's. I think the only electrical devices that date back to '41 is the two-pipe front door chime, and a hallway light fixture.