4. Communications: radio wave antennas
  5. Antennas
  6. With radio cabinet

Seppo Ojantakanen

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Antenna with variable directional pattern

Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate

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Combined structure of a helical antenna and a dielectric plate

Communications: radio wave antennas – Antennas – Spiral or helical type
Patent

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Double-action antenna

Communications: radio wave antennas – Antennas – With radio cabinet
Patent

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Helical resonator filter including short circuit stub tuning

Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent

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Profile ID: LFUS-PAI-P-128278

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