USD312034SExpiredUtility
Screw driver bit
Individually held — no corporate assignee on recordPriority: Nov 14, 1986Filed: Nov 14, 1986Granted: Nov 13, 1990
Est. expiryNov 14, 2006(expired)· nominal 20-yr term from priority
Inventors:Mario W. Espin
69
PatentIndex Score
14
Cited by
9
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a screw driver bit, as shown and described.
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