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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US40682224 Nov 197510 Jan 1978U.S. Philips CorporationCircuit arrangement for automatic level control for optical sensors with pulsed radiation, for example for surveillance equipment
US430500615 Jan 19808 Dec 1981Electrical switch
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US61079384 Apr 199822 Aug 2000Infrared proximity and remote control wall switch