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Core barrel head assembly with axial groove

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Assignee: LONGYEAR TM INCPriority: Oct 6, 2010Filed: Jan 14, 2011Granted: Sep 6, 2011
Est. expiryOct 6, 2030(~4.2 yrs left)· nominal 20-yr term from priority
Inventors:Christopher L. Drenth
69
PatentIndex Score
9
Cited by
66
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a core barrel head assembly with axial groove, as shown and described.

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