Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1992-07-28
1994-03-22
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D10 71, D10 65
Patent
active
D03453090
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patent: 803349 (1905-10-01), Lines
patent: 824299 (1906-06-01), Huey
patent: 875462 (1907-12-01), Rowan
patent: 2741030 (1956-04-01), Wise
patent: 2878569 (1959-03-01), Metrulis
patent: 4733477 (1988-03-01), Fincham et al.
patent: 4745689 (1988-05-01), Hiltz
Davis A. D.
Douglas Alan P.
Schatzel Thomas E.
Xcelar, Inc.
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