USD330501SExpiredUtility

Key head

42
Assignee: CHICAGO LOCK COPriority: Nov 27, 1991Filed: Nov 27, 1991Granted: Oct 27, 1992
Est. expiryNov 27, 2011(expired)· nominal 20-yr term from priority
Inventors:Robert L. Steinbach
42
PatentIndex Score
4
Cited by
8
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for the key head, having a key engaging end including an outer square shaped configuration and an inner circular configuration as shown and described.

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