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Fire escape, ladder, or scaffold
Ladder with pivoted prop
Rear prop, laterally moving
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Step ladder
Fire escape – ladder – or scaffold – Ladder with pivoted prop – Rear prop – laterally moving
Patent
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Tripod
Fire escape – ladder – or scaffold – Ladder with pivoted prop – Rear prop – laterally moving
Patent
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Tripod stepladder
Fire escape – ladder – or scaffold – Ladder with pivoted prop – Rear prop – laterally moving
Patent
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