One of the subject matter experts on this topic is John Osepchuk, who worked at Raytheon during the 60s, 70s and 80s.
papers on the topic include:
"A History of Microwave Heating Applications", IEEE Transactions on Microwave Theory and Techniques, Vol.
MTT-32, No. 9.
has complained in recent years at IEEE
talks that some web sites propose that the microwave oven was invented in Russia, or Germany, but then again, you can find almost anything you want on the internet.
We hereby invite John
to give us a hand telling the real microwave oven story!
will send us a picture of the burn-in stand one of these days...
Spencer's thoughts turned to heating food; legend has it that a candy bar melted in his
pocket from stray radiation.
could not have been thinking of a consumer application, as the high cost of microwave equipment would prevent widespread home use.
This quote is from Osepchuk's
1984 article, which confirms Bock's contribution: