4. Communications: radio wave antennas
  5. Antennas
  6. Balanced doublet - centerfed

Kenneth F. Umpleby

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Digital encoder for door operator

Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
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Operator motor control

Electricity: motive power systems – Motor-reversing – Automatic and/or with time-delay means
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Operator motor control

Electricity: motive power systems – Supplied or controlled by space-transmitted electromagnetic...
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Profile ID: LFUS-PAI-P-453622

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