USD430500SExpiredUtility

Door alarm

69
Assignee: CHEN YI-CHENPriority: Dec 13, 1999Filed: Dec 13, 1999Granted: Sep 5, 2000
Est. expiryDec 13, 2019(expired)· nominal 20-yr term from priority
Inventors:Yi-Chen Chen
69
PatentIndex Score
14
Cited by
4
References
1
Claims

Claims

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

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