4. Electric power conversion systems
  5. Current conversion
  6. Using semiconductor-type converter

Cheng Chien-Chuan

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Distribution valve assembly

Fluid handling – Systems – With flow control means for branched passages
Patent

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Flexible seat pad with position-adjustable nape and waist rests

Chairs and seats – Bottom or back with means to alter contour
Reexamination Certificate

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Mattress with adjustable massage units

Beds – Mattress – With disparate article or article retention means
Reexamination Certificate

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Power supply control circuit for a DC pump containing a waveform

Electric power conversion systems – Current conversion – Using semiconductor-type converter
Patent

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Profile ID: LFUS-PAI-P-1612367

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