Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1980-08-15
1983-05-10
Spangler, Robert C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D1005
Patent
active
D02689090
REFERENCES:
patent: D126555 (1941-04-01), Gurtov
patent: D238153 (1975-12-01), Johnson et al.
patent: D242231 (1976-11-01), Shaffer
patent: 2998655 (1961-09-01), White
patent: 3499225 (1970-03-01), Darrah
patent: 3707772 (1973-01-01), Cotter
patent: 3820249 (1974-06-01), Stone
patent: 3832782 (1974-09-01), Johnson et al.
Hinderstein Philip M.
Spangler Robert C.
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