Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1990-07-18
1993-01-26
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03327531
REFERENCES:
patent: D269663 (1983-07-01), Smith et al.
patent: D317725 (1991-06-01), McCord
patent: 721694 (1903-03-01), Green
patent: 1820791 (1931-08-01), Forrest
patent: 2667703 (1954-02-01), Zumkeller
patent: 2919491 (1960-01-01), Darrell
patent: 3826013 (1974-07-01), Baher
patent: 3950860 (1976-04-01), Holcombe
patent: 4473957 (1984-10-01), Faulkner
Davis Antoine D.
Douglas Alan P.
Gernstein Terry M.
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