USD616111SActiveUtility
Stairway riser
Individually held — no corporate assignee on recordPriority: Dec 23, 2009Filed: Dec 23, 2009Granted: May 18, 2010
Est. expiryDec 23, 2029(~3.4 yrs left)· nominal 20-yr term from priority
Inventors:Stephen E. Ronsheim
29
PatentIndex Score
1
Cited by
4
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a stairway riser, as shown and described.
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