Compass

Details Compass Compass

1996-02-07

1997-04-08

Davis, Antoine Duval

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D10 70

Patent

active

D03787427

REFERENCES:
patent: D269504 (1983-06-01), Swanson
patent: 452054 (1891-05-01), Sperry

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