USD315424SExpiredUtility

Vertical barrier fresnel lens array for infrared motion detector systems

87
Assignee: FRESNEL TECH INCPriority: Feb 27, 1989Filed: Feb 27, 1989Granted: Mar 12, 1991
Est. expiryFeb 27, 2009(expired)· nominal 20-yr term from priority
Inventors:Richard N. Claytor
87
PatentIndex Score
26
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a vertical barrier fresnel lens array for infrared motion detector systems, as shown and described.

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