Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1978-02-22
1979-07-31
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D1004
Patent
active
D02525011
REFERENCES:
patent: D57932 (1921-05-01), Scott
patent: 2356037 (1944-08-01), Drucker
patent: 2478427 (1949-08-01), Schmid
patent: 2604703 (1952-07-01), Meyer
patent: 2881529 (1959-04-01), Roch
patent: 2923064 (1960-02-01), Rudolph
American Machinist, 6/16/49, block centers micrometer.
Nakahara Masao
Yamauchi Mineo
Androlia William L.
Holtje Nelson C.
Mitutoyo Mfg. Co. Ltd.
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