USD493377SExpiredUtility
Retractable chalk line
Priority: Oct 24, 2003Filed: Oct 24, 2003Granted: Jul 27, 2004
Est. expiryOct 24, 2023(expired)· nominal 20-yr term from priority
Inventors:Michael Brugger
55
PatentIndex Score
9
Cited by
16
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a retractable chalk line, as shown and described.
Join the waitlist — get patent alerts
Track USD493377S — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.