USD284001SExpiredUtility
Twist-lock spark plug
Individually held — no corporate assignee on recordPriority: Sep 6, 1983Filed: Sep 6, 1983Granted: May 27, 1986
Est. expirySep 6, 2003(expired)· nominal 20-yr term from priority
Inventors:Floyd D. Harris
17
PatentIndex Score
2
Cited by
9
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a twist-lock spark plug, substantially as shown and described.
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