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Furnace delining apparatus

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Hoisting means including constant tension hoist wire

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Hydraulic boom compensation system for aerial devices

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Jib crane

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Reexamination Certificate

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Jib hold rod securing device for cranes

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Jib stretching and folding device for crane

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Jib stretching and folding mechanism for a jib crane

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Mechanism for suppressing displacement of travelling crane

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Method and apparatus for extending fly section of crane boom

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Method for stretching and folding extension jib in wheeled type

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Mobile hydraulic hoist

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Reexamination Certificate

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Movable support for rotatable extend/retract screw in telescopic

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Oscillation suppressor for self-leveling boom

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Pickup truck derrick with traveling sheaves

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Telescopic boom construction

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Telescopic boom mechanism

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Telescopic crane boom having rotatable extend/retract screws

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Telescoping crane boom

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Telescoping crane boom with locking and indicator means

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Telescoping mobile crane

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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