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

Luc L. Chou

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Fully automatic collapsible umbrella

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

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Lightly operable fully automatic umbrella

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

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Longer effective automatic umbrella

Tent – canopy – umbrella – or cane – Umbrella – Mechanically operated
Patent

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Profile ID: LFUS-PAI-P-259361

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