Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1976-04-12
1977-06-28
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D1004
Patent
active
D02448360
REFERENCES:
patent: D21568 (1892-05-01), Geraci
patent: D25609 (1896-06-01), Davis
patent: D157218 (1950-02-01), Vanderbrook
patent: 3220115 (1965-11-01), Puckett
Holtje Nelson C.
MacGregor Bertha L.
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