Backpack

Design Patent

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Design Patent

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D0451274

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

REFERENCES:
patent: D. 375622 (1996-11-01), Croft
patent: D. 402460 (1998-12-01), Moor
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patent: 4925070 (1990-05-01), Tulgan
patent: 4940173 (1990-07-01), Jacober
patent: 5632429 (1997-05-01), Cantwell
patent: 5649658 (1997-07-01), Hoffman et al.
patent: 5706992 (1998-01-01), Moor
patent: 6029875 (2000-02-01), Johnston
patent: 6196436 (2001-03-01), Williams
patent: 6199737 (2001-03-01), Ringelstetter

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