Protractor

Details Protractor Protractor

2003-05-01

2004-06-01

Davis, Antoine D. (Department: 2913)

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

Design Patent

active

D0490729

CLAIM:
The ornamental design for the protractor, as shown and described in the accompanying figures.

REFERENCES:
patent: 2016489 (1935-10-01), Escalante
patent: D129583 (1941-09-01), Grant
patent: D146342 (1947-02-01), White
patent: D156504 (1949-12-01), Grant
patent: 2507073 (1950-05-01), White
patent: D192748 (1962-05-01), Brockman
patent: D206086 (1966-10-01), Oltean
patent: 3579841 (1971-05-01), Peterson
patent: 4524522 (1985-06-01), Perry
patent: D398865 (1998-09-01), Dietterich et al.
patent: 08122003 (1996-05-01), None

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