Weighing scale

Details Weighing scale Weighing scale

1986-12-22

1989-11-21

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Weight, force or density

Patent

active

D03046931

REFERENCES:
patent: D80871 (1930-04-01), Fellows
patent: D83148 (1931-01-01), Carleton
patent: D85546 (1931-11-01), Rockola
patent: D91326 (1934-01-01), May
patent: D118829 (1940-02-01), Nelson
patent: D142055 (1945-08-01), Barok
patent: D185250 (1959-05-01), Watling
patent: D188069 (1960-05-01), Blanck
patent: D281677 (1985-12-01), Chen
patent: 4253534 (1981-03-01), Hau
patent: 4576244 (1986-03-01), Zeigner

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