USD621038SActiveUtility

Grooved piston

38
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Aug 4, 2009Filed: Aug 4, 2009Granted: Aug 3, 2010
Est. expiryAug 4, 2029(~3 yrs left)· nominal 20-yr term from priority
Inventors:Steven J. MaxaAdam J. Cernohous
38
PatentIndex Score
3
Cited by
32
References
1
Claims

Claims

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

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