Postal scale

Details Postal scale Postal scale

1998-12-07

1999-10-19

Davis, Antoine Duval

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Weight, force or density

1004

Patent

active

D04154371

REFERENCES:
patent: 440959 (1890-11-01), O'Marra
patent: 2284526 (1942-05-01), Linsley
patent: 2949287 (1960-08-01), Linsley
patent: 3057421 (1962-10-01), Fann
patent: 3135344 (1964-06-01), Olyphant
patent: 3224516 (1965-12-01), Stelzer
patent: 3786885 (1974-01-01), Mills
patent: 3830322 (1974-08-01), Mills
patent: 4792002 (1988-12-01), Ward
patent: 4840241 (1989-06-01), Ishikawa
patent: 4961472 (1990-10-01), Pratt
patent: 5767456 (1998-06-01), Hartselle

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