4. Communications: directive radio wave systems and devices (e.g.,
  5. Combined with diverse type radiant energy system
  6. With infrared device

Jake Choy

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Combination microwave passive infrared motion detector with...

Communications: directive radio wave systems and devices (e.g. – Combined with diverse type radiant energy system – With infrared device
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Method and apparatus for proximity activated RFID system

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