USD331686SExpiredUtility

Butter knife

Assignee: PERSSON BJORNPriority: Oct 13, 1989Filed: Apr 10, 1990Granted: Dec 15, 1992
Est. expiryOct 13, 2009(expired)· nominal 20-yr term from priority
Inventors:Bjorn Persson
74
PatentIndex Score
21
Cited by
4
References
1
Claims

Claims

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

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