USD271949SExpiredUtility

Smoke detector

38
Individually held — no corporate assignee on recordPriority: May 29, 1981Filed: May 29, 1981Granted: Dec 27, 1983
Est. expiryMay 29, 2001(expired)· nominal 20-yr term from priority
Inventors:Louis J. Dechristopher
38
PatentIndex Score
4
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a smoke detector, substantially as shown and described.

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