Mechanical pencil

Details Mechanical pencil Mechanical pencil

2007-10-23

2007-10-23

Spear, Robert M. (Department: 2913)

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

Design Patent

active

29243841

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

REFERENCES:
patent: D182311 (1958-03-01), Steinberg
patent: D404070 (1999-01-01), Hasegawa
patent: D411858 (1999-07-01), Katami
patent: D451545 (2001-12-01), Tsuchikura
patent: D453790 (2002-02-01), Tsuchikura
patent: D525302 (2006-07-01), Togawa

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