4. Fire escape, ladder, or scaffold
  5. Ladder

Donald T. Wehmeyer

Inventor

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Locking device

Fire escape – ladder – or scaffold – Platform with elevating or lowering means
Patent

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Personnel lift devices

Fire escape – ladder – or scaffold – Automatic control
Patent

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Scaffold system

Fire escape – ladder – or scaffold – Ladder
Patent

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Translating mobile work platform

Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent

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Vehicle fluidic drive circuit

Motor vehicles – Steering by driving – Independently operable drive motors
Patent

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Profile ID: LFUS-PAI-P-684850

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