Fire escape – ladder – or scaffold – Ladder – Slidable nested single rung units
Reexamination Certificate
2007-01-25
2011-12-13
Shue, Alvin Chin (Department: 3634)
Fire escape, ladder, or scaffold
Ladder
Slidable nested single rung units
C182S156000
Reexamination Certificate
active
08074771
ABSTRACT:
Safety ladders to provide egress from water to a dock or boat or the like are disclosed. Safety ladders in accordance with the present invention are mountable to a structure, upwardly collapsible to a first storage configuration, and downwardly extendible to a second climbing configuration.
REFERENCES:
patent: 124541 (1872-03-01), Buttkereit
patent: 396552 (1889-01-01), Elsbury
patent: 406765 (1889-07-01), Parry
patent: 674584 (1901-05-01), Porter
patent: 870914 (1907-11-01), Twitchell
patent: 994760 (1911-06-01), Laroy
patent: 2043304 (1936-06-01), Pfister
patent: 2534202 (1950-12-01), McCall
patent: 3083785 (1963-04-01), Hyman
patent: 3307654 (1967-03-01), Green et al.
patent: 4541507 (1985-09-01), Gibellato
patent: 5143174 (1992-09-01), Davis
patent: 5738186 (1998-04-01), Jones
patent: 6386318 (2002-05-01), Smith
patent: 6530455 (2003-03-01), Arnette et al.
patent: 2003/0037991 (2003-02-01), Dibelardino et al.
patent: 2004/0031646 (2004-02-01), Huang
patent: 2552316 (1985-03-01), None
Chin Shue Alvin
Nikolai Thomas J.
Nikolai & Mersereau , P.A.
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