4. Fire escape, ladder, or scaffold
  5. Self-sustaining
  6. Scaffold horse

Leonard E. Koffski

Inventor

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Bracket

Fire escape – ladder – or scaffold – Self-sustaining – Scaffold horse
Patent

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Bracket

Fire escape – ladder – or scaffold – Self-sustaining – Scaffold horse
Patent

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Portable step

Fire escape – ladder – or scaffold – Wall- or floor-attached – Independent rung or step
Patent

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Support bracket

Fire escape – ladder – or scaffold – Self-sustaining – Scaffold horse
Patent

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Wall lifter

Implements or apparatus for applying pushing or pulling force – Step-by-step traveling bar – Clutch actuated
Patent

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Profile ID: LFUS-PAI-P-474186

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