4. Communications: electrical
  5. Condition responsive indicating system
  6. With particular coupling link

James W. Crimmins

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ASK optical transmitter

Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent

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Ask receiver with signal delay and stretching

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent

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Distributed infrared communication system

Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent

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Distributed infrared communication system

Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent

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Infrared communicating device

Communications: electrical – Condition responsive indicating system – With particular coupling link
Patent

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Profile ID: LFUS-PAI-P-583178

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