We’re celebrating #NationalInventorsDay – and Edison’s birthday – by looking back at an old video that covers the sometimes controversial history of patents, and some early work on sound recording by Thomas Edison and others. https://youtu.be/NvYWVakoo8Y

RT @SonicMovie
Happy #NationalInventorsDay to the one and only inventor of the butt-copter! Take that, Thomas Edison. http://paramnt.us/Sonic2WatchAtHome

Marian Croak Invented VoIP (Voice over Internet Protocol) Technology Happy #NationalInventorsDay #BlackHistoryMonth #BlackHistoryFacts #BlackMastodon #BlackMasto https://www.invent.org/inductees/marian-croak