Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1990-11-15
1993-10-12
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03401944
REFERENCES:
patent: D230628 (1974-03-01), Sunley
patent: 2437847 (1948-03-01), Zeise
patent: 3672064 (1972-06-01), Elkins et al.
patent: 3760766 (1973-09-01), Wopshchall
patent: 3812587 (1974-05-01), Elkins
patent: 3885314 (1975-05-01), Banas
patent: 4793069 (1988-12-01), McDowell
U.S. Disclosure Document, Accurate Outlet, Apr. 23, 1992, Dennis J. White.
Davis Antoine D.
Douglas Alan P.
Gernstein Terry M.
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