USD314791SExpiredUtility

Security system demonstrator

39
Assignee: HWANG SHIH-MINGPriority: Dec 19, 1988Filed: Dec 19, 1988Granted: Feb 19, 1991
Est. expiryDec 19, 2008(expired)· nominal 20-yr term from priority
Inventors:Shih-Ming Hwang
39
PatentIndex Score
2
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a security system demonstrator, as shown and described.

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