<unk> <unk> <unk> <unk> <unk>  Percy Lebaron Spencer (July 19, 1894 <unk> September 8, 1970) was an American physicist and inventor. He became known as the inventor of the microwave oven.<unk> He became known as the inventor of the microwave oven.  Question: What year was Percy Lebaron Spencer born?
1894 <unk>