USD299308SExpiredUtility

Knife sharpener

90
Assignee: CORNING GLASS WORKSPriority: Sep 28, 1987Filed: Sep 28, 1987Granted: Jan 10, 1989
Est. expirySep 28, 2007(expired)· nominal 20-yr term from priority
Inventors:William Prindle
90
PatentIndex Score
29
Cited by
2
References
1
Claims

Claims

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

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