USD404986SExpiredUtility
Drum key
Individually held — no corporate assignee on recordPriority: Jun 10, 1997Filed: Jun 10, 1997Granted: Feb 2, 1999
Est. expiryJun 10, 2017(expired)· nominal 20-yr term from priority
Inventors:John E. Mahon
46
PatentIndex Score
12
Cited by
4
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a drum key, as shown and described.
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