4. Wave transmission lines and networks
  5. Plural channel systems
  6. Having branched circuits

Philip Pak-Lin Kwan

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Antenna with multiple folds

Communications: radio wave antennas – Antennas – Spiral or helical type
Reexamination Certificate

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Saw filter device for radio tranceiver utilizing different coupl

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent

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Saw-based ladder filter including multiple coUpling coefficients

Wave transmission lines and networks – Coupling networks – Electromechanical filter
Patent

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Profile ID: LFUS-PAI-P-281654

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