USD331471SExpiredUtility

Long range fresnel lens array for infrared motion detector

Assignee: FRESNEL TECH INCPriority: Jan 24, 1991Filed: Jan 24, 1991Granted: Dec 1, 1992

Est. expiryJan 24, 2011(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a long range fresnel lens array for infrared motion detector, as shown and described.

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