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Spearhead

91
Assignee: LONGYEAR TM INCPriority: May 16, 2008Filed: Dec 15, 2009Granted: Aug 24, 2010
Est. expiryMay 16, 2028(~1.8 yrs left)· nominal 20-yr term from priority
Inventors:Christopher L. DrenthGeorge IbrahimSacha Tillack
E21B 17/023E21B 31/18E21B 25/00
91
PatentIndex Score
29
Cited by
64
References
1
Claims

Claims

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

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