The first microwave I ever saw
was a Litton, and not an Amana Radarange.
One of my uncles (my Dad's baby brother) was in various aspects of food service, and in 1967, he worked for the Commercial Cooking division of Ohio Edison.
I don't know how he came by it--whether it was a loan or a purchase, but it was a small, heavy, solid stainless box. By today's standards, ridiculously slow, and extremely simple.
It was a Sunday evening when he and my aunt called us. They lived about 15 minutes away then, and Ma was reluctant to go over, but we did. She had heard of microwave cooking, being a
Home Economics teacher, but was a little skeptical.
(Incidentally,
a properly conducted Home Economics/Family and Consumer Studies curriculum is NOT a "snap." Yes, "stirring and stitching," but also child development, human nutrition, consumer finances, World foodways and food security, single living, home construction and decor, and economic advocacy. Properly done, it includes biology, bacteriology, cultural history, language development, and more.)
We were amazed by cooking in paper (bacon strips, popcorn), and cooking fast (the 90 second hot dog...) I don't remember any vegetables, or fish, or even reheating, the things that truly shine when cooked by microwave.
I, of course, wanted one immediately, but we didn't get one until 1986

And then, we got the RR-700.
However, we DID have colour tv before they did.....but that's quite another story.
Lawrence/Maytagbear