Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1979-12-07
1981-10-20
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D10 65, D1004
Patent
active
D02613697
REFERENCES:
patent: D168401 (1952-12-01), Harris
patent: D208723 (1967-09-01), Cammilleri
patent: D224663 (1972-08-01), de Jong
patent: 1025086 (1912-04-01), Harris
patent: 1630174 (1927-05-01), Elsas
patent: 2813349 (1957-11-01), Harris
patent: 3456354 (1969-07-01), Wright
patent: 3869806 (1975-03-01), Humphrey
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