Pencil sharpener

Details Pencil sharpener Pencil sharpener

2002-04-09

2003-02-25

Holtje, Martie K. (Department: 2913)

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Perforating or cutting

Design Patent

active

D0470889

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

REFERENCES:
patent: D117901 (1939-12-01), Hoffman
patent: 2251053 (1941-07-01), Hoffmann
patent: D132577 (1942-05-01), Hoffmann
patent: 2822781 (1958-02-01), Burton
patent: 3134365 (1964-05-01), Hori
patent: D406173 (1999-02-01), Chen
patent: D425560 (2000-05-01), Yuen

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