USD268133SExpiredUtility
Platform for supporting a ladder on stairs
Individually held — no corporate assignee on recordPriority: Oct 14, 1980Filed: Oct 14, 1980Granted: Mar 1, 1983
Est. expiryOct 14, 2000(expired)· nominal 20-yr term from priority
Inventors:Betty D. Drake
35
PatentIndex Score
6
Cited by
5
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a platform for supporting a ladder on stairs, substantially as shown and described.
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