4. Communications: radio wave antennas
  5. Antennas
  6. With variable reactance for tuning antenna

Donald K. Lefevre

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Coadunate emitter/detector for use with fiber optic devices

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Non-resonant coaxial monopole antenna

Communications: radio wave antennas – Antennas – With variable reactance for tuning antenna
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Remote fiber optic electrical switch

Optical waveguides – With optical coupler – Switch
Patent

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Remote fiber optic electrical switch using light pulse signals

Optical waveguides – With optical coupler – Switch
Patent

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Profile ID: LFUS-PAI-P-94509

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