USD309804SExpiredUtility
Diver's mask
Individually held — no corporate assignee on recordPriority: Jul 1, 1988Filed: Jul 1, 1988Granted: Aug 7, 1990
Est. expiryJul 1, 2008(expired)· nominal 20-yr term from priority
Inventors:John W. Chang
38
PatentIndex Score
3
Cited by
4
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a diver's mask, as shown and described.
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