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Compass
US 2,542,018 A
Filed
: 09/28/1944
Issued
: 02/20/1951
Est. Priority Date
: 09/28/1944
Status: Expired due to Term
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Current Assignee
Thomas M. Ferrill Jr
Original Assignee
Thomas M. Ferrill Jr
Inventors
Ferrill, Thomas M. Jr.
Application Number
US02/556,186
Time in Patent Office
2,336 Days
Field of Search
US Class Current
33/360
CPC Class Codes
G01C 17/28
Electromagnetic compasses w...
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