Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Weight – force or density
Patent
1989-04-12
1991-06-18
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Weight, force or density
Patent
active
D03175782
REFERENCES:
patent: D88997 (1933-01-01), Weber
patent: D89508 (1933-03-01), Hoyer
patent: D91255 (1933-12-01), Vanderhoff
patent: D91694 (1934-03-01), Vogel
patent: D154446 (1949-07-01), Walter
patent: 1824698 (1931-09-01), Weber
Form, Vorlaufermodell, 4/1978, p. 95.
Dial type scale, made in Germany by Seca, model type: 760 Doctor's Scale.
Fraker Richard
Gresens Stanley
Joss Michael
Continental Scale Corporation
Davis Antoine D.
Holtje Nelson C.
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