Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1997-05-13
1998-04-07
Davis, Antoine Duval
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
1004
Patent
active
D03932192
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Photograph of plumb bobs from The 1994 American Woodworker Calendar, .COPYRGT.1993.
Beall Jerrold R.
McGuire Michael S.
Davis Antoine Duval
Lee Valley Tools Ltd.
Pratt John S.
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