Ladder support systems

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

Reexamination Certificate

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Details

C182S107000

Reexamination Certificate

active

10639389

ABSTRACT:
A ladder support system that may be mounted on a ladder rung or other securing structures and may further be shaped to provide lateral support to the ladder when a pole or other supporting structure is positioned on the ladder support. The ladder support may also be configured for convenient mounting and removal from the securing structure to which it may be mounted. The ladder support may be resilient and may have a slit along the length of the support to provide releasable mounting on the ladder.

REFERENCES:
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patent: 2808975 (1957-10-01), Palmquist
patent: 3590951 (1971-07-01), Berger
patent: 4089390 (1978-05-01), McLain
patent: 5012895 (1991-05-01), Santos
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patent: 5673768 (1997-10-01), Schmitt et al.
patent: 5797571 (1998-08-01), Brophy
patent: 5816365 (1998-10-01), Ruth
patent: 5850894 (1998-12-01), Busenhart
patent: 6354400 (2002-03-01), Purkayastha
patent: 6390236 (2002-05-01), Eastman
U.S. Appl. No. 10/657,324, filed Sep. 8, 2003.
U.S. Appl. No. 10/662,854, filed Sep. 15, 2003.
U.S. Appl. No. 10/662,855, filed Sep. 15, 2003.
Extension Ladder Accessories; Jul. 14, 2003; http://www.wernerladder.com/acc-ext.htm.

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