Quote:
Originally Posted by Pio1980
How could RCA claim a patent on prior art, their superheterodyne downconversion claim notwithstanding?
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I don't know the details but RCA definitely had TV patents.
Look on the back of most TVs and you'll see a label stating "Licensed under US patents of RCA"
You just need to convince the patent office that your application is different enough from any prior work. Plus, RCA was known for being very aggressive and screwing over the little guy.