Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1991-10-02
1993-05-04
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03352617
REFERENCES:
patent: 390115 (1888-09-01), Delany
patent: 1560482 (1925-11-01), Noisom
patent: 4141151 (1979-02-01), Jansky
patent: 4154001 (1979-05-01), Serafin
patent: 4383374 (1983-05-01), Bertero
patent: 4457078 (1984-07-01), Suchy
U.S. Cavalry, Staff of Life, Aug. 1987, p. 100.
Davis Antoine D.
Douglas Alan P.
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