P
USD856477SActiveUtilityPatentIndex 73

Device for preventing sewer backflow

Assignee: CAMPBELL ROBERTPriority: Mar 18, 2016Filed: Aug 12, 2016Granted: Aug 13, 2019
Est. expiryMar 18, 2036(~9.7 yrs left)· nominal 20-yr term from priority
Inventors:CAMPBELL ROBERT
73
PatentIndex Score
3
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24
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1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       I claim the ornamental design for a device for preventing sewer backflow, as shown and described.

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