Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1991-01-28
1993-07-13
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03372790
REFERENCES:
patent: 154677 (1874-09-01), Hyde
patent: D261369 (1981-10-01), Smith
patent: 825320 (1906-07-01), Hewitt
patent: 885658 (1908-04-01), Abrahams
patent: 2308018 (1943-01-01), Misz
patent: 2633640 (1953-04-01), Bucsko
patent: 4381607 (1983-05-01), Place
Stone Larry T.
Styles Charles C.
Bailey Ralph
Davis A. D.
Douglas Alan P.
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