Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1975-09-19
1977-02-08
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D1004
Patent
active
D02433192
REFERENCES:
patent: 1037147 (1912-08-01), Johnson
patent: 1272430 (1918-07-01), Hanson
patent: 2038962 (1936-04-01), Schulthess
patent: 2181032 (1939-11-01), Watkins
patent: 3685237 (1972-08-01), Johnson
patent: 3748795 (1973-07-01), Berntsen
patent: 3916821 (1975-11-01), Pies
patent: D231328 (1974-04-01), Nasser
Berntsen Peter
Peterson Phillip R.
Holtje Nelson C.
Long Theodore J.
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