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Expandable dual tube scaffold hatch structure

Fire escape – ladder – or scaffold – Stackable
Reexamination Certificate

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Expandable jack

Fire escape – ladder – or scaffold – Self-sustaining – Having height adjustable platform
Patent

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Expandable sawhorse-type support for work pieces including...

Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Trestle
Reexamination Certificate

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Expandable scaffold for hopper

Fire escape – ladder – or scaffold – Scaffold supported internally on shaft
Patent

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Expandable workhorse

Fire escape – ladder – or scaffold – Scaffold horse beam or leg – Relatively movable
Patent

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Expansible corridor

Fire escape – ladder – or scaffold – Safety device – platform associated – Railing
Patent

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Explosive release window grille

Fire escape – ladder – or scaffold – Convertible – Ladder
Patent

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Extendable A-frame ladder for uneven surfaces

Fire escape – ladder – or scaffold – Ladder – Supporting surface compensating means
Reexamination Certificate

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Extendable leg means for levelling ladders and the like

Fire escape – ladder – or scaffold – Ladder – Supporting surface compensating means
Reexamination Certificate

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Extendable pole locking mechanism for ladder stabilizer

Fire escape – ladder – or scaffold – Ladder with pivoted prop – Lateral prop
Patent

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Extendable pyramid ladder system

Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Collapsible ladder
Patent

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Extendable sawhorse top rail

Fire escape – ladder – or scaffold – Self-sustaining – Scaffold horse
Patent

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Extendable scaffold bracket

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

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Extendable step ladder

Fire escape – ladder – or scaffold – Ladder with pivoted prop – Section extensible below prop pivot
Patent

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Extendable support

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

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Extendable, elevatable, rotatable, collapsible boom and basket f

Fire escape – ladder – or scaffold – Means maintaining platform level on angularly movable support – Swingable support
Patent

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Extendeable sawhorse top rail

Fire escape – ladder – or scaffold – Self-sustaining – Scaffold horse
Patent

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Extendible ladder

Fire escape – ladder – or scaffold – With storage device for supple escape
Patent

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Extendible safety posts for manhole ladders

Fire escape – ladder – or scaffold – Wall- or floor-attached – Ladder
Patent

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Extendible self-retracting ladder

Fire escape – ladder – or scaffold – Ladder – Flexible
Reexamination Certificate

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