Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1988-10-19
1991-08-27
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03194043
REFERENCES:
patent: 363331 (1887-05-01), Hammer
patent: 466044 (1891-12-01), Jacobs
patent: 867001 (1907-09-01), Bromley
patent: 992873 (1911-05-01), Riggins
patent: 1186807 (1916-06-01), Litomy
patent: 1369829 (1921-03-01), Minges
patent: 1787424 (1931-01-01), Altenbach
patent: 1840135 (1932-01-01), Schutt
patent: 4006613 (1977-02-01), Zion
Davis Antoine D.
Holtje Nelson C.
Yeager Arthur G.
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