Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Weight – force or density
Patent
1989-05-08
1990-06-12
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Weight, force or density
Patent
active
D03084892
REFERENCES:
patent: D250883 (1979-01-01), Hudson
patent: D260376 (1981-08-01), Lawing
patent: D260973 (1981-09-01), Lawing
patent: D267554 (1983-01-01), Swinstead
patent: D268334 (1983-03-01), Harbers, Jr.
patent: D275186 (1984-08-01), Gard
patent: D275558 (1984-09-01), Pearson
patent: D285541 (1986-09-01), Elkerbout
Davis Antoine D.
Holtje Nelson C.
Tokyo Electric Company Ltd.
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