4. Fire escape, ladder, or scaffold
  5. Ladder with pivoted prop
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A-frame ladder extender

Fire escape – ladder – or scaffold – Ladder with pivoted prop – Section extensible below prop pivot
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Adjustable extension stepladder

Fire escape – ladder – or scaffold – Ladder with pivoted prop – Single rear prop – pole type
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Adjustable ladder stabilizer

Fire escape – ladder – or scaffold – Ladder with pivoted prop – Lateral prop
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Adjustable ladder support

Fire escape – ladder – or scaffold – Ladder with pivoted prop – Lateral prop
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Adjustable step ladder

Fire escape – ladder – or scaffold – Ladder with pivoted prop – Section extensible below prop pivot
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

All-purpose ladder

Fire escape – ladder – or scaffold – Ladder with pivoted prop – Coplanar extension with prop pivoted to lower section
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0
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