Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1985-03-14
1987-06-23
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D02904454
REFERENCES:
patent: D59943 (1921-12-01), Watson
patent: D238153 (1975-12-01), Johnson
patent: 1454693 (1923-05-01), Schlattau
patent: 2633640 (1953-04-01), Bucsko
patent: 2752692 (1956-07-01), Smith
Dunsmuir George H.
Dutton, Jr. Harold H.
Holtje Nelson C.
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