Title:
Two-way television communication unit
United States Patent 2420198
Inventors:
Rosenthal, Adolph H.
Publication Date:
05/06/1947
Export Citation:
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Assignee:
SCOPHONY CORP OF AMERICA
Primary Class:
348/14.16
Other Classes:
348/E7.08
International Classes:
H04N7/14; H04N7/14
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US Patent References:
2315784Electrical circuit
2308381Two-way television transmission
1980150Television and like apparatus
1932253Television system