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Home › Remote control system capable of transmitting the information with the aid of an infra red beam using PPM or an ultrasonic beam using PDM

Remote control system capable of transmitting the information with the aid of an infra red beam using PPM or an ultrasonic beam using PDM

US Patent 4231031 · Granted Oct 28, 1980

Estimated economic value: $386,000 ⓘ

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