Coin-operated scale

Details Coin-operated scale Coin-operated scale

1991-02-22

1992-12-29

Douglas, Alan P.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Weight, force or density

Patent

active

D03320626

REFERENCES:
patent: D93031 (1934-08-01), May
patent: 4336855 (1982-06-01), Chen
patent: 4518052 (1985-05-01), Chen

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