USD658334SActiveUtility

Protective air filtration device

72
Assignee: GORANOV KONSTANTINPriority: Nov 5, 2010Filed: Nov 5, 2010Granted: Apr 24, 2012
Est. expiryNov 5, 2030(~4.3 yrs left)· nominal 20-yr term from priority
Inventors:Konstantin GoranovAlbena Milencheva
72
PatentIndex Score
23
Cited by
56
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a protective air filtration device, as shown and described.

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