Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1988-10-31
1991-03-12
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03153177
REFERENCES:
patent: D251483 (1979-04-01), Freeman
patent: D285057 (1986-08-01), Labelle
patent: 883660 (1908-03-01), Marr
patent: 2668359 (1954-02-01), Litchfield
Dyer, Measurement Instruments, 1983, 56-58.
Mitutoyo, Micrometers, 1981, pp. 52,53.
Davis Antoinc D.
Holtje Nelson C.
Osburn A. Ray
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