4. Tent, canopy, umbrella, or cane
  5. Umbrella
  6. Self-opening and closing

Lung-Chiao Chou

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Automatic closing and opening umbrella with fixed type of plural

Tent – canopy – umbrella – or cane – Umbrella – Self-opening and closing
Patent

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Disposable container

Envelopes – wrappers – and paperboard boxes – Wrapper – Bottle
Patent

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Double-locking adjustable brace

Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Telescopic
Patent

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Ellipsograph

Geometrical instruments – Scriber – Curved line
Patent

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Ellipsograph capable of drawing dotted line

Geometrical instruments – Scriber – Curved line
Patent

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Profile ID: LFUS-PAI-P-417174

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