Fire escape – ladder – or scaffold – With handrail or guard for ladder
Reexamination Certificate
2008-01-29
2008-01-29
Chin-Shue, Alvin (Department: 3634)
Fire escape, ladder, or scaffold
With handrail or guard for ladder
Reexamination Certificate
active
07322442
ABSTRACT:
Walk through ladder extensions are provided to attach to the upper ends of ladder side rails, and define a wide unobstructed space between them. The extensions can be gripped by a user to steady the user as the user moves onto a roof of a building against which the ladder is placed.
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Clark Bruce D.
Feik Frederick G.
Chin-Shue Alvin
Westman Champlin & Kelly P.A.
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