Move-on ladder system

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

Reexamination Certificate

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Details

C182S020000, C182S163000, C182S022000

Reexamination Certificate

active

07121381

ABSTRACT:
A system and method for providing an improved ladder for enabling a user to climb up or down and forward or backwards movement relative to a surface. The system enables increased mobility and stability. The system can be designed in multiple ways which some of them have been shown in the present invention. The present invention clearly saves production time, keeping the user on the ladder while relocating, and it definitely more convenient and time saving to the user.

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patent: 6651774 (2003-11-01), Yoo
patent: 6880835 (2005-04-01), Tornabene et al.

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