4. Chairs and seats
  5. Bottom or back
  6. Framework

Yung-Hua Chen

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Airflow-cooling apparatus for a ceiling air-conditioning...

Rotary kinetic fluid motors or pumps – Axially opposed working fluid paths to or from runner – Pump impeller means
Reexamination Certificate

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Apparatus for adjusting an armrest of an office chair

Chairs and seats – Armrest
Reexamination Certificate

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Apparatus for adjusting an armrest of an office chair

Chairs and seats – Armrest
Reexamination Certificate

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Backrest adjusting device for office chairs

Chairs and seats – Bottom or back with means to alter contour – Providing support for lower back region
Reexamination Certificate

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Ceiling air-conditioning circulation machine

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Air treatment
Design Patent

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Profile ID: LFUS-PAI-P-2160445

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