USD318489SExpiredUtility
Combined ruler and writing instrument unit
Est. expiryNov 17, 2008(expired)· nominal 20-yr term from priority
Inventors:Hu Cho-Kai
47
PatentIndex Score
7
Cited by
14
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a combined ruler and writing instrument unit, as shown and described.
Join the waitlist — get patent alerts
Track USD318489S — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.