USD326986SExpiredUtility

Knife sharpener

55
Assignee: NAT PRESTO INDUSTRIES INCPriority: Mar 2, 1990Filed: Mar 2, 1990Granted: Jun 16, 1992
Est. expiryMar 2, 2010(expired)· nominal 20-yr term from priority
Inventors:Brent W. DresselRoger L. Kelly
55
PatentIndex Score
8
Cited by
29
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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