Multicarrier transmission system
United States Patent 2270385
Inventors:
Samuel, Skillman Thomas
Publication Date:
01/20/1942
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Assignee:
HARTFORD NAT BANK & TRUST CO
Primary Class:
Other Classes:
332/167, 370/497, 332/151
International Classes:
H04J1/04; H04J1/12; H04J1/00