Digital protractor

Details Digital protractor Digital protractor

2009-02-13

2010-02-23

Davis, Antoine D. (Department: 2915)

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

CD10S070000

Design Patent

active

D0610477

CLAIM:
The ornamental design for a digital protractor, as shown and described.

REFERENCES:
patent: D335634 (1993-05-01), Yau
patent: 7204030 (2007-04-01), Kattar
patent: D562709 (2008-02-01), Sterpka et al.
patent: 2009/0064516 (2009-03-01), Diaz et al.

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