Door lock with security key code

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning

Design Patent

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Design Patent

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29247090

CLAIM:
The ornamental design for a door lock with security key code, as shown and described.

REFERENCES:
patent: 4979383 (1990-12-01), Tully
patent: 5475996 (1995-12-01), Chen
patent: D365976 (1996-01-01), Chiu
patent: D429139 (2000-08-01), Ahn
patent: 6145353 (2000-11-01), Doucet
patent: 6286347 (2001-09-01), Frolov
patent: D470033 (2003-02-01), Fleury et al.
patent: 6733050 (2004-05-01), Yao
patent: D501388 (2005-02-01), Carpintero
patent: 6935149 (2005-08-01), Peng et al.
patent: D527608 (2006-09-01), Antkowiak et al.
patent: D533763 (2006-12-01), Wright et al.

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