Safety lock

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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D0639137

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

REFERENCES:
patent: 3555860 (1971-01-01), Atkinson
patent: D303623 (1989-09-01), Pearson
patent: D344881 (1994-03-01), Sauerland
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patent: 7221272 (2007-05-01), Hosselet
patent: 7296448 (2007-11-01), Shaw
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patent: 7482907 (2009-01-01), Denison et al.
patent: D593398 (2009-06-01), Pelletier et al.
patent: D614476 (2010-04-01), Buhse
patent: 7721576 (2010-05-01), Amir
patent: D630489 (2011-01-01), Gratzki et al.
Porta, Inc.,Electro-Mechanical Door Lock, website: http://www.portainc.com/emdl—2006.htm, printed Oct. 15, 2010; Physical Address: 2420 Hamilton Rd., Arlington Heights, IL 60005.

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