USD305873SExpiredUtility
Tread and riser stair gauge
Individually held — no corporate assignee on recordPriority: Feb 10, 1986Filed: Feb 10, 1986Granted: Feb 6, 1990
Est. expiryFeb 10, 2006(expired)· nominal 20-yr term from priority
Inventors:Ronald J. Bisson
46
PatentIndex Score
10
Cited by
9
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a tread and riser stair gauge, as shown and described above.
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