Ballpoint pen

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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D0643877

CLAIM:
The ornamental design for a ballpoint pen, as shown and described.

REFERENCES:
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patent: D579978 (2008-11-01), Yu et al.
patent: D596233 (2009-07-01), Kusaba
patent: D603897 (2009-11-01), Nakazawa
patent: D616497 (2010-05-01), Shiina
patent: D624591 (2010-09-01), Koehler
patent: D626177 (2010-10-01), Koehler

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