4. Fire escape, ladder, or scaffold
  5. Torso harness
  6. Strand-engaging, with descent retarder

Daniel I. Smith

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Ascending cam

Fire escape – ladder – or scaffold – Torso harness – Strand-engaging – with descent retarder
Patent

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Internal sheave pulley system for bipods, tripods, or quadripods

Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
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