4. Fire escape, ladder, or scaffold
  5. Platform with elevating or lowering means
  6. Suspended

Ole E. Leivestad

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Automatic window washer

Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent

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Method and apparatus for moving a platform into a suspended outb

Fire escape – ladder – or scaffold – Platform with elevating or lowering means – Suspended
Patent

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Profile ID: LFUS-PAI-P-835564

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