USD309415SExpiredUtility
Knife sharpener
Est. expiryOct 29, 2007(expired)· nominal 20-yr term from priority
Inventors:Kiyoshi Shimizu
94
PatentIndex Score
44
Cited by
2
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a knife sharpener, as shown and described.
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