Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1992-01-02
1993-09-14
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03393054
REFERENCES:
patent: 25143 (1902-02-01), Martz
patent: D318435 (1991-07-01), Cutler
patent: 1808705 (1931-06-01), Owens, Jr.
patent: 2736097 (1956-02-01), Coleman, Jr.
patent: 3068580 (1962-12-01), Orthwin
patent: 3974568 (1976-08-01), Linderman
patent: 4197649 (1980-04-01), Flinn
Davis Antoine D.
Douglas Alan P.
Murphy Bernard J.
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