4. Fire escape, ladder, or scaffold
  5. Having transpositioning base and erecting means

William D. Murrill

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Extensible boom construction for self-propelled aerial work plat

Static structures (e.g. – buildings) – Mechanism operated relatively movable shaft assembly – Longitudinally extensible by flexible drive or hoist
Patent

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Scissors lift apparatus

Fire escape – ladder – or scaffold – Having transpositioning base and erecting means
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Self-propelled aerial work platform

Material or article handling equipment – Conveying – lifting – or transferring article – Crane or hoist
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Profile ID: LFUS-PAI-P-715186

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