2 ms·
The New Radio Garage Door Opener (1933)
- buescher 6y agoThe old Colman patents are cool too: https://patents.google.com/?q=garage&inventor=Howard+D+Colman&oq=inventor:(Howard+D+Colman)+garage https://patents.google.com/?q=garage&inventor=Howard+D+Colma... They're from the 1920s and go into more detail on the awesome morse-code-style cam-based mechanical decoding mechanism. Don't try these at home.