USD413541SExpiredUtility
Door answering system
Individually held — no corporate assignee on recordPriority: Jul 23, 1998Filed: Jul 23, 1998Granted: Sep 7, 1999
Est. expiryJul 23, 2018(expired)· nominal 20-yr term from priority
Inventors:Joseph Kaiser
77
PatentIndex Score
29
Cited by
3
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a door answering system, as shown.
Join the waitlist — get patent alerts
Track USD413541S — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.