4. Fire escape, ladder, or scaffold
  5. Door and ladder
  6. Door operates ladder
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Basement emergency exit

Fire escape – ladder – or scaffold – Door and ladder – Door operates ladder
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Ceiling ladder

Fire escape – ladder – or scaffold – Door and ladder – Door operates ladder
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Emergency escape device

Fire escape – ladder – or scaffold – Door and ladder – Door operates ladder
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Hydraulically operated disappearing stairway

Fire escape – ladder – or scaffold – Door and ladder – Door operates ladder
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Stern platform ladder

Fire escape – ladder – or scaffold – Door and ladder – Door operates ladder
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Stowable ladder configured for installation in an opening

Fire escape – ladder – or scaffold – Door and ladder – Door operates ladder
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Trap door and folding ladder arrangement

Fire escape – ladder – or scaffold – Door and ladder – Door operates ladder
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0
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