Title:
Signal wave transmission system
Document Type and Number:
United States Patent 2248746
Inventors:
Davis, Kingsbury H.
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Publication Date:
07/08/1941
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Referenced by:
Export Citation:
Assignee:
BELL TELEPHONE LABOR INC
Primary Class:
Other Classes:
455/234.100, 455/73, 455/61, 370/281
International Classes:
H04B3/20