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Automatic railroad track gauge
US 2,507,896 A
Filed
: 11/09/1948
Issued
: 05/16/1950
Est. Priority Date
: 11/09/1948
Status: Expired due to Term
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Current Assignee
Frank Le Van A
Original Assignee
Frank Le Van A
Inventors
FRANK LE VAN A
Application Number
US03/059,048
Time in Patent Office
553 Days
Field of Search
US Class Current
33/523.1
CPC Class Codes
E01B 2203/16
Guiding or measuring means,...
E01B 35/04
Wheeled apparatus
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