USD449100SExpiredUtility

HVAC filter

94
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Aug 25, 2000Filed: Aug 25, 2000Granted: Oct 9, 2001
Est. expiryAug 25, 2020(expired)· nominal 20-yr term from priority
Inventors:Douglas C. SundetJames F. Pitzen
94
PatentIndex Score
58
Cited by
36
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an HVAC filter, as shown and described.

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