4. Geometrical instruments
  5. Scriber
  6. Curved line

Tien-Fu Cheng

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Brush

Brushware – Circular brush head
Patent

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Cleaning brush

Brushware – Simulative – Animate
Patent

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Ellipsograph

Geometrical instruments – Scriber – Curved line
Patent

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Structure for fastening a support shaft to a seat of a chair

Chairs and seats – Chair hardware or attachment
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1166684

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