Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1981-05-22
1983-11-15
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D1004
Patent
active
D02713810
REFERENCES:
patent: D139083 (1944-10-01), Macht
patent: D157217 (1950-02-01), Vanderbrook
patent: D197351 (1964-01-01), Audeh
patent: D244836 (1977-06-01), Stockton
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