USD343907SExpiredUtility
Ladder secure
Individually held — no corporate assignee on recordPriority: May 28, 1992Filed: May 28, 1992Granted: Feb 1, 1994
Est. expiryMay 28, 2012(expired)· nominal 20-yr term from priority
Inventors:Donald L. Porter
50
PatentIndex Score
9
Cited by
5
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a ladder secure, as shown and described.
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