Title:
Filter system
United States Patent 2418127
US Patent References:
Signaling system
- - 2266401

Periodic wave repeater
- - 2212173

Television system
- - 2251677


Inventors:
Emile, Labin
Publication Date:
04/01/1947
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Assignee:
STANDARD TELEPHONES CABLES LTD
Primary Class:
327/37
Other Classes:
327/335
International Classes:
G01R29/027; G01S7/292; G01R29/02