Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Weight – force or density
Patent
1976-07-12
1978-03-21
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Weight, force or density
D1004
Patent
active
D02475537
REFERENCES:
patent: D188545 (1960-08-01), Ylinen
patent: D211831 (1968-07-01), Berne
patent: 1718413 (1929-06-01), Edwards
patent: 3216259 (1965-11-01), Bendix
patent: 3672219 (1972-06-01), Van Patten
Friedman Alex
Holtje Nelson C.
J. A. Preston Corporation
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