4. Amusement devices: toys
  5. Having light-or sound-responsive switch or control

Robert Grzesek

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Toy device using through-the-body communication

Amusement devices: toys – Having light-or sound-responsive switch or control
Reexamination Certificate

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Ultrasonic doppler effect speed measurement

Communications – electrical: acoustic wave systems and devices – Echo systems – Speed determination
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2463144

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