USD328847SExpiredUtility

Knife sharpener

70
Assignee: TRI V CORPPriority: May 30, 1989Filed: May 30, 1989Granted: Aug 25, 1992
Est. expiryMay 30, 2009(expired)· nominal 20-yr term from priority
Inventors:Frank R. ButtonAlvin E. Taylor
70
PatentIndex Score
17
Cited by
8
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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