Search Results for: Photosensitive electrical apparatus
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company limited room , /f, premier centre, cheung shun street, cheung sha wan security control equipment & systems security control equipment & systems wah sang electrical company limited room , /f, premier centre, cheung shun street, cheung sha wan security control equipment & systems security control...
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telautograph - wikipedia telautograph from wikipedia, the free encyclopedia jump to navigation jump to search an early telautograph the telautograph, an analog precursor to the modern fax machine, transmits electrical impulses recorded by potentiometers at the sending station to servomechanisms attached
teleautographs in various parts of the station; the trainmaster's office, the passenger agent's office, information desk, etc., photograph by jack delano, feb. feb., farm security administration - office of war information photograph collection (library of congress). ^ walter j. armstrong, mechanical and electrical...
https://en.wikipedia.org/wiki/Telautograph