Drafting edge and compass system

Details Drafting edge and compass system Drafting edge and compass system

1997-04-10

1998-08-11

Davis, Antoine Duval

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D10 65, D10 71, 1004

Patent

active

D03968138

REFERENCES:
patent: 5007174 (1991-04-01), Cook
patent: 5208992 (1993-05-01), Syken

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