Herman Affel
Patents and Inventions
Coaxial cable, 1929, (US patent 1,835,031).






Herman Affel (1893 1972); an American electrical engineer and inventor; co-authored or authored around 40 patents for electronic devices, including advanced transmitters and innovative antennas. Best known for coinventing the coaxial cable carrier system for multiple high speed long distance data transmissions (US patent 1,835,031).

Title Primary Class Description Inventor Assignee Issue Date Patent No.
Equalization of Carrier Transmissions 333/16 Electro-mechanical adjustable equalizer Herman A. Affel American Telephone and Telegraph Company (AT&T) October 7, 1924 US1,511,013
Piezo-Electric Interference Eliminator 333/187 Interference eliminator for radio transmission systems Herman A. Affel American Telephone and Telegraph Company (AT&T) December 17, 1929 US1,739,494
Concentric Conduction System 174/28 Wideband coaxial cable transmission Herman A. Affel;
Estill I. Green
American Telephone and Telegraph Company (AT&T) November 11, 1930 US1,781,092
Concentric Conduction System 348/14.01 Coaxial cable Lloyd Espenschied;
Herman Affel
American Telephone and Telegraph Company (AT&T) December 8, 1931 US1,835,031


Electrical Engineering Patents and Inventions     Chemistry Quick Facts

Privacy     Disclaimer     Contact     About     Site Map     Home

 


Last updated: December 2014
Copyright 2006-2014 Patent-Invent.com