USD327471SExpiredUtility

Infra-red detector wall switch

75
Assignee: BURLE TECH INCPriority: Aug 22, 1989Filed: Aug 22, 1989Granted: Jun 30, 1992
Est. expiryAug 22, 2009(expired)· nominal 20-yr term from priority
Inventors:William C. Frick
75
PatentIndex Score
17
Cited by
8
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an infra-red detector wall switch, as shown.

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