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Patent US1003657 - PETER LYMBTJUNER ROBERTSON
PETER LYMBTJUNER ROBERTSON
PETER LYMBTJUNER ROBERTSON et al
› Overview
Abstract
Drawings
Description
Claims
Patent number
: 1003657
Filing date
: Nov 8, 1907
Issue date
: Sep 19, 1911
Inventors
:
PETER LYMBTJUNER ROBERTSON
,
PETER LYMBTJUNER ROBERTSON
Current U.S. Classification
:
470/63
;
470/205
View patent at USPTO
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Referenced by
Citing Patent
Filing date
Issue date
Original Assignee
Title
US3972083
Jan 13, 1975
Aug 3, 1976
P.L. Robertson Manufacturing Co. Ltd.
Punch for making recessed screw
Drawings
Drawings
