USD463039SExpiredUtility
Tread of a staircase
Assignee: TAIWAN LOUNGE CHAIR INDUSTRY CPriority: Nov 23, 2001Filed: Nov 23, 2001Granted: Sep 17, 2002
Est. expiryNov 23, 2021(expired)· nominal 20-yr term from priority
Inventors:Chen-Nung Tseng
63
PatentIndex Score
18
Cited by
0
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a tread of a staircase, as shown and described.
Join the waitlist — get patent alerts
Track USD463039S — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.