"Back in the day," during the 70s, my sister had a "semi-mobile" dishwasher. You rolled it next to the sink, plugged it in and attached a hose to a special adapter on the kitchen faucet. The same hose had a water inlet and drainage line.
Personally, I prefer my appliances plumbed into the water lines.
My upstairs neighbor had one of those. Every time she used it I got suds backed up into my bathtub. Pleasant! That was from 1974-78.
We had one of those til about 5 years ago. It was a beast that I’d guess actually dated from about the time you mention, but we bought used from s neighbor in the early 90s.
When it wasn’t in use, it was wheeled out of the way.