Title:
Frequency modulation system
United States Patent 2233183

Inventors:
Hans, Roder
Publication Date:
02/25/1941
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Assignee:
GEN ELECTRIC
Primary Class:
332/123
Other Classes:
370/343, 370/204, 381/2, 370/481, 332/119, 370/483
International Classes:
H04B14/00; H04L12/02