Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1988-04-18
1991-06-18
Dunkins, Bruce W.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03175740
REFERENCES:
patent: D136707 (1943-11-01), Cameron et al.
patent: 456404 (1891-07-01), Davis
patent: 539675 (1895-05-01), Donnan
patent: 590230 (1897-09-01), LaGrange
patent: 971752 (1910-10-01), Hull
patent: 2403919 (1946-07-01), Hagner
patent: 2412831 (1946-12-01), Owens
patent: 2569796 (1951-10-01), Browning
Davis Antoine D.
Dunkins Bruce W.
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