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Signalling system
US 3,054,100 A
Filed
: 06/04/1958
Issued
: 09/11/1962
Est. Priority Date
: 06/04/1958
Status: Expired due to Term
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Current Assignee
Clarence S. Jones
Original Assignee
Clarence S. Jones
Inventors
Jones, Clarence S.
Application Number
US03/739,909
Time in Patent Office
1,560 Days
Field of Search
US Class Current
340/10.34
CPC Class Codes
B61L 25/04
Indicating or recording tra...
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