Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1997-01-15
1998-09-01
Davis, Antoine Duval
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
1004
Patent
active
D03976254
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patent: 583695 (1897-06-01), Stalons et al.
patent: 2189245 (1940-02-01), Guinez
patent: 2255808 (1941-09-01), Porter et al.
patent: 2551997 (1951-05-01), Cody
Pang Andy Tak Wing
Pang Sylvania Sau Fun
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