Writing instrument

Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Marking instrument

Design Patent

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Design Patent

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29233811

CLAIM:
The ornamental design for a writing instrument, as shown and described.

REFERENCES:
patent: D331070 (1992-11-01), Hu Huang
patent: D345577 (1994-03-01), Hohner
patent: D395674 (1998-06-01), Boix Gacia
patent: D418541 (2000-01-01), Mayer
patent: D441018 (2001-04-01), Droege
patent: D445131 (2001-07-01), Keda
patent: D461204 (2002-08-01), Klefbom
patent: D475406 (2003-06-01), Cetera
patent: D485574 (2004-01-01), Keil
patent: D487776 (2004-03-01), Keda
patent: D494218 (2004-08-01), Anand
patent: D499141 (2004-11-01), Chevalier
patent: D500522 (2005-01-01), Rommel
patent: D501882 (2005-02-01), Hamilton et al.
patent: D518102 (2006-03-01), Lovell

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