Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1986-05-23
1989-05-09
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D11 781, 33347
Patent
active
D03010171
REFERENCES:
patent: D131492 (1942-03-01), Lee
patent: D142357 (1945-09-01), Younghusband
patent: D295501 (1988-05-01), Brayford
patent: 1857488 (1932-05-01), Weeks
patent: 4404752 (1983-09-01), Hanna
patent: 4705408 (1987-11-01), Jordi
Norman Bertil
Yngstrom Arne
Holtje Nelson C.
Instrumentverken AB
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