USD324224SExpiredUtility

Drill sharpener

27
Assignee: CHIEN MU-YENPriority: Aug 17, 1989Filed: Aug 17, 1989Granted: Feb 25, 1992
Est. expiryAug 17, 2009(expired)· nominal 20-yr term from priority
Inventors:Mu-Yen Chien
27
PatentIndex Score
1
Cited by
6
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a drill sharpener, as shown and described.

Join the waitlist — get patent alerts

Track USD324224S — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.