Compass with support neck

Details Compass with support neck Compass with support neck

1997-12-10

1998-08-11

Davis, Antoine Duval

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

1004

Patent

active

D03968154

REFERENCES:
patent: D217696 (1970-05-01), Fitzpatrick et al.
patent: D263379 (1982-03-01), Uchiyama
patent: D299908 (1989-02-01), Miyazima
patent: 4309828 (1982-01-01), Sakamoto
patent: 4670988 (1987-06-01), Baxter

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