Fire escape – ladder – or scaffold – Stackable – Ladder section
Reexamination Certificate
2007-09-11
2007-09-11
Chin-Shue, Alvin (Department: 3634)
Fire escape, ladder, or scaffold
Stackable
Ladder section
C182S207000, C182S107000
Reexamination Certificate
active
10660988
ABSTRACT:
An add-on extension ladder is removably mountable to a portion of a conventional ladder to extend the reach of the conventional ladder without any structural modification to the conventional ladder. The add-on extension has integral elements for engaging rungs on the upper portion of the conventional ladder to easily mount and remove the extension ladder to and from the conventional ladder.
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Chin-Shue Alvin
Stone Mark P.
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