A patent print poster of a Microphone invented by Harry F. Olson and Frank Massa for RCA. The patent was issued by the United States Patent Office on April 5, 1938. RCA Corporation, founded as the Radio Corporation of America, by David Sarnoff was an American electronics company in existence from 1919 to 1986. Around 1926 RCA formed the National Broadcasting Company (NBC).
Patent prints allow you to have a piece of history in your home, office, man cave, geek den or anywhere you wish to add an interesting touch.