USD604815SActiveUtility

Electric tank heater

47
Assignee: PETROSTAR PETROLEUM CORPPriority: Sep 25, 2008Filed: Mar 25, 2009Granted: Nov 24, 2009
Est. expirySep 25, 2028(~2.2 yrs left)· nominal 20-yr term from priority
Inventors:Robert Alexander Sim
47
PatentIndex Score
8
Cited by
13
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       The ornamental design for an electric tank heater, as shown and described.

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