4. Joints and connections
  5. Distinct end coupler
  6. Interrupted periphery, e.g., split or segmental, etc.

Douglas R. Verenski

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Hand rail coupler system

Joints and connections – Distinct end coupler – Interrupted periphery – e.g. – split or segmental – etc.
Patent

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Ladder system and method of climbing having a rail with a non-li

Fire escape – ladder – or scaffold – Safety device for ground-supported ladder – Terminal foot or shoe
Patent

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