Door 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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D0452810

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

REFERENCES:
patent: 3655229 (1972-04-01), Tumbiolo
patent: 4021063 (1977-05-01), Porter
patent: D432897 (2000-10-01), Spangler

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