Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1987-04-10
1990-06-19
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03086437
REFERENCES:
patent: D157710 (1950-03-01), Smitzer
patent: D161662 (1951-01-01), Stratman
patent: 1555792 (1925-07-01), Souder
patent: 2507032 (1950-05-01), Mantos
Ellard Terence R.
O'Leary Mary J.
Davis Antoine D.
Holtje Nelson C.
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