4. Communications: electrical
  5. Audible indication
  6. Ultrasonic pest control

Ta-Lun Yang

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Coded acoustic alarm transmitter/receiver system

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection
Patent

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General purpose modular acoustic signal generator

Communications: electrical – Audible indication – Ultrasonic pest control
Patent

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Personal acoustic alarm system

Communications: electrical – Condition responsive indicating system – With particular coupling link
Patent

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Railroad test vehicle comprising a railroad measurement axle...

Railway rolling stock – Locomotives – Auxiliary function
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1059896

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