Title:
Electrooptical transmission system
Document Type and Number:
United States Patent 1769920
Inventors:
Frank, Gray
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Publication Date:
07/08/1930
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Referenced by:
Export Citation:
Assignee:
BELL TELEPHONE LABOR INC
Primary Class:
Other Classes:
348/E05.069, 332/180, 348/492, 348/663, 348/484, 348/E07.048, 348/385.100, 348/E07.038, 348/43
International Classes:
H04J1/00; H04N5/16; H04N7/08; H04N7/12