USD301844SExpiredUtility

Central control unit for an alarm system

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Assignee: NAT INDUSTRIAL SECURITY CORPPriority: Feb 12, 1986Filed: Feb 12, 1986Granted: Jun 27, 1989
Est. expiryFeb 12, 2006(expired)· nominal 20-yr term from priority
Inventors:Frank SchwarzRichard H. NielsonKent Chen
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PatentIndex Score
5
Cited by
1
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a central control unit for an alarm system, as shown and described.

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