USD259179SExpiredUtility

Knurled closure

Assignee: ALUMINUM CO OF AMERICAPriority: Sep 25, 1978Filed: Sep 25, 1978Granted: May 12, 1981
Est. expirySep 25, 1998(expired)· nominal 20-yr term from priority
Inventors:Bing Welch
51
PatentIndex Score
5
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a knurled closure, substantially as shown and described.

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