USD390669SExpiredUtility

Ladder step extender

42
Individually held — no corporate assignee on recordPriority: May 30, 1997Filed: May 30, 1997Granted: Feb 10, 1998
Est. expiryMay 30, 2017(expired)· nominal 20-yr term from priority
Inventors:Donald R. ArmstrongPhillip F. Bolf
42
PatentIndex Score
6
Cited by
8
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a ladder step extender, as shown.

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