USD456234SExpiredUtility

Knurled collar attachment system

72
Assignee: PORTER CABLE CORPPriority: Jun 30, 2000Filed: Jun 30, 2000Granted: Apr 30, 2002
Est. expiryJun 30, 2020(expired)· nominal 20-yr term from priority
Inventors:David V. Keller
72
PatentIndex Score
19
Cited by
79
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a knurled collar attachment system, as shown and described.

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