USD505157SExpiredUtility

Blackboard eraser and dust collecter

14
Priority: May 25, 2004Filed: May 25, 2004Granted: May 17, 2005
Est. expiryMay 25, 2024(expired)· nominal 20-yr term from priority
Inventors:Chen-Lang Fan
14
PatentIndex Score
0
Cited by
7
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a blackboard eraser and dust collecter, as shown and described.

Join the waitlist — get patent alerts

Track USD505157S — get alerts on status changes and closely related new filings.

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