Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1983-11-15
1986-05-06
Zarfas, Louis S.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D10 68
Patent
active
D02836831
REFERENCES:
patent: D253688 (1979-12-01), Culver et al.
patent: 980730 (1911-01-01), Wyatt
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