USD266996SExpiredUtility

Ultrasonic intrusion detector

70
Assignee: AMERICAN DISTR TELEGRAPH COMPANYPriority: Feb 7, 1980Filed: Feb 7, 1980Granted: Nov 23, 1982
Est. expiryFeb 7, 2000(expired)· nominal 20-yr term from priority
Inventors:Kenneth E. BeesonH. Patrick Thornton
70
PatentIndex Score
12
Cited by
1
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an ultrasonic intrusion detector, as shown and described.

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