Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1988-07-11
1991-05-28
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03171337
REFERENCES:
patent: 1170174 (1916-02-01), Matson
patent: 2375150 (1945-05-01), Townsend
patent: 4324050 (1982-04-01), Weir
patent: 4757616 (1988-07-01), Hills
Kissow Ernst
Kissow Wilhelm
Davis Antoine D.
Holtje Nelson C.
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