Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1985-02-20
1987-06-09
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D02902362
REFERENCES:
patent: 2770886 (1956-11-01), Johnson
patent: 2911022 (1959-11-01), Brown
patent: 3169320 (1965-02-01), Currie
patent: 3456702 (1969-07-01), Johnson
patent: 3914871 (1975-10-01), Wolff
patent: 4380872 (1983-04-01), Moran
Ferrell Don E.
Holtje Nelson C.
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