4. Fire escape, ladder, or scaffold
  5. Ladder with pivoted prop

Raymond P. King

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Collapsible step stool with step movement guide system

Fire escape – ladder – or scaffold – Convertible
Patent

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Detachable tray for step stool

Fire escape – ladder – or scaffold – Combined
Patent

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Step stool

Fire escape – ladder – or scaffold – Ladder with pivoted prop
Patent

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Step stool

Building units and construction elements – Stair – ladder – scaffold – or similar support – Stepped
Patent

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Profile ID: LFUS-PAI-P-743351

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