USD397636SExpiredUtility

Siren speaker

46
Assignee: PORTMAN SECUTITY SYSTEM INT CO LTDPriority: Apr 2, 1997Filed: Apr 2, 1997Granted: Sep 1, 1998
Est. expiryApr 2, 2017(expired)· nominal 20-yr term from priority
Inventors:Charles Chu
46
PatentIndex Score
7
Cited by
4
References
1
Claims

Claims

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

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