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Testing circuit for carrier communication system with automatic reset timer
US 2,520,007 A
Filed
: 11/21/1947
Issued
: 08/22/1950
Est. Priority Date
: 11/21/1947
Status: Expired due to Term
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Current Assignee
Lester Hochgraf
Original Assignee
Lester Hochgraf
Inventors
LESTER HOCHGRAF
Application Number
US02/787,459
Time in Patent Office
1,005 Days
Field of Search
US Class Current
370/244
CPC Class Codes
H04J 1/16
Monitoring arrangements for...
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