USD306409SExpiredUtility

Smoke detector

80
Assignee: UNIVERSAL SECURITY INSTR INCPriority: Dec 8, 1986Filed: Dec 8, 1986Granted: Mar 6, 1990
Est. expiryDec 8, 2006(expired)· nominal 20-yr term from priority
Inventors:Darrell D. Fish
80
PatentIndex Score
19
Cited by
12
References
1
Claims

Claims

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

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