4. Communications: electrical
  5. Land vehicle alarms or indicators
  6. Of relative distance from an obstacle

Weiwen Yan

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Ultrasonic sensors mounting support

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Design Patent

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Vehicle reversing alarm having ultrasonic and camera sensors

Communications: electrical – Land vehicle alarms or indicators – Of relative distance from an obstacle
Reexamination Certificate

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