Ruler

Details Ruler Ruler

1996-02-07

1997-04-08

Davis, Antoine Duval

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

Patent

active

D03787435

REFERENCES:
patent: D211283 (1968-06-01), Hassenfeld
patent: D340195 (1993-10-01), Shapiro
patent: 5461795 (1995-10-01), Kok
patent: 5501019 (1996-03-01), Concari et al.

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