USD309491SExpiredUtility
Life preserver
Individually held — no corporate assignee on recordPriority: Mar 31, 1988Filed: Mar 31, 1988Granted: Jul 24, 1990
Est. expiryMar 31, 2008(expired)· nominal 20-yr term from priority
Inventors:Lawrence R. Martin
19
PatentIndex Score
1
Cited by
4
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a life preserver, as shown and described.
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