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Working base elevating apparatus

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

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Working catwalk for bridge inspection apparatuses

Fire escape – ladder – or scaffold – Platform – Relatively movable sections
Patent

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Working gondola

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

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Working platform

Fire escape – ladder – or scaffold – Ladder and platform – Platform with ladder as support
Patent

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Working platform

Fire escape – ladder – or scaffold – Having transpositioning base and erecting means
Patent

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Working platform assembly

Fire escape – ladder – or scaffold – Having transpositioning base and erecting means – Erecting means actuated by lazy tong
Reexamination Certificate

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Working platform lifting apparatus for aerial ladder truck

Fire escape – ladder – or scaffold – Ladder with vertically moving platform or escape – Ladder supports platform
Patent

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Working range indicating device for aerial ladder truck

Fire escape – ladder – or scaffold – With indicator – signal or alarm
Patent

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Workperson safety restraint system

Fire escape – ladder – or scaffold – Torso harness
Patent

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Workplace support and enclosure

Fire escape – ladder – or scaffold – Body catcher – Sheet or net type
Patent

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