Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1981-10-08
1983-12-27
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D1004
Patent
active
D02719479
REFERENCES:
patent: D146285 (1947-01-01), Musgrave
patent: D157218 (1950-02-01), Vanderbrook
patent: D189990 (1961-03-01), Wern
patent: D191135 (1961-08-01), Martin
patent: D192383 (1962-03-01), Rogers
patent: D251113 (1979-02-01), Oseka
patent: 2080620 (1937-05-01), Martin
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