4. Communications: directive radio wave systems and devices (e.g.,
  5. Radar transponder system

Clemens Ruppel

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Passive surface wave sensor which can be wirelessly interrogated

Communications: directive radio wave systems and devices (e.g. – Radar transponder system
Patent

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Radio scanning system using acoustical surface waves (SW radio s

Communications: electrical – Continuously variable indicating – With meter reading
Patent

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Transversal filter operating using surface acoustic waves

Wave transmission lines and networks – Coupling networks – Electromechanical filter
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1591619

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