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Automatic volume control for alternating current
US 2,671,849 A
Filed
: 11/22/1950
Issued
: 03/09/1954
Est. Priority Date
: 11/22/1950
Status: Expired due to Term
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Current Assignee
Bartelink Everhard H B
Original Assignee
Bartelink Everhard H B
Inventors
BARTELINK EVERHARD H B
Application Number
US03/197,102
Time in Patent Office
1,203 Days
Field of Search
US Class Current
455/69
CPC Class Codes
H04B 1/40
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