Dual helical cutter for pencil sharpener

Details Dual helical cutter for pencil sharpener Dual helical cutter for pencil sharpener

2011-06-29

2011-12-06

Palasik, Patricia (Department: 2915)

Machines not elsewhere specified

Material working, abrading, or founding machinery

Element or attachment

Design Patent

active

D0649989

CLAIM:
The ornamental design for dual helical cutter for a pencil sharpener, as shown and described.

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patent: 2003/0002928 (2003-01-01), Soltau et al.
patent: 2003/0190201 (2003-10-01), Marusich et al.
patent: 2010/0175788 (2010-07-01), Yeh et al.
patent: 2010/0310329 (2010-12-01), Harif

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