Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1991-06-21
1993-07-06
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D10101
Patent
active
D03370615
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patent: D236594 (1975-09-01), Smith, Jr.
patent: 3302464 (1967-02-01), Langguth
patent: 3742534 (1973-07-01), Guest
patent: 4367657 (1983-01-01), Ward
patent: 4553897 (1985-11-01), Briggs
patent: 4641598 (1987-02-01), Hodges
patent: 4641851 (1987-02-01), Knies
patent: 4790197 (1988-12-01), Kimonides
Davis Antoine D.
Douglas Alan P.
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