USD676527SActiveUtility

Unidirectional valve

90
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Dec 16, 2009Filed: Dec 16, 2009Granted: Feb 19, 2013
Est. expiryDec 16, 2029(~3.4 yrs left)· nominal 20-yr term from priority
Inventors:Thomas J. XueMichael K. DomroesePhilip G. MartinDavid M. BlombergNathan A. Abel
90
PatentIndex Score
41
Cited by
73
References
1
Claims

Claims

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

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