Plumb bob

Details Plumb bob Plumb bob

1995-09-22

1997-01-21

Davis, Antoine Duval

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

Patent

active

D03774546

REFERENCES:
patent: D59559 (1921-11-01), MacQuarrie
patent: D84856 (1931-08-01), Shulman
patent: D128194 (1941-07-01), Rosetta
patent: 2502598 (1950-04-01), Seligman
patent: 3710507 (1973-01-01), Puynter

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