USD537154SExpiredUtility

Heating element

72
Assignee: IRWIN IND TOOL COPriority: Sep 18, 2003Filed: Apr 14, 2005Granted: Feb 20, 2007
Est. expirySep 18, 2023(expired)· nominal 20-yr term from priority
Inventors:Ian CunninghamCraig Roberts
72
PatentIndex Score
17
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61
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       The ornamental design for a heating element, as shown and described.

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