Drawing disc

Details Drawing disc Drawing disc

1996-10-31

1998-04-14

Davis, Antoine Duval

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

1004

Patent

active

D03934233

REFERENCES:
patent: 3699660 (1972-10-01), Siegel
patent: 3813787 (1974-06-01), Mercorelli
patent: 3900956 (1975-08-01), Furuoka et al.
patent: 4688330 (1987-08-01), Konrad

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