Title:
Multiplex signaling system
Document Type and Number:
United States Patent 1709076
Inventors:
Jammer, Jacob S.
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Publication Date:
04/16/1929
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Export Citation:
Assignee:
WESTERN ELECTRIC CO
Primary Class:
Other Classes:
370/201, 370/491, 370/492, 370/295, 370/293
International Classes:
H04J1/00