USD317111SExpiredUtility

Door lock

52
Individually held — no corporate assignee on recordPriority: May 29, 1990Filed: May 29, 1990Granted: May 28, 1991
Est. expiryMay 29, 2010(expired)· nominal 20-yr term from priority
Inventors:Blair E. Johns
52
PatentIndex Score
8
Cited by
9
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a door lock, as shown and described.

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