Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1991-05-06
1993-04-27
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03350908
REFERENCES:
patent: D260972 (1981-09-01), Sharpe
patent: 1826807 (1931-10-01), McDanel
patent: 2461783 (1949-02-01), Stack
patent: 4233747 (1980-11-01), Fisher
Davis Antoine D.
Douglas Alan P.
Lojacono Francis X.
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