Fire escape – ladder – or scaffold – Convertible
Reexamination Certificate
2007-01-02
2007-01-02
Chin-Shue, Alvin (Department: 3634)
Fire escape, ladder, or scaffold
Convertible
C280S030000
Reexamination Certificate
active
10855754
ABSTRACT:
A portable workstation has an integrated container, hand truck, and easily removable ladder. Wheels or casters are provided to make the device easily portable. An integrated removable ladder is used to push and guide or steer the device. The combination yields a portable workstation.
REFERENCES:
patent: 1842573 (1932-01-01), Treek
patent: 2121982 (1938-06-01), Pugsley
patent: 3210091 (1965-10-01), Ng
patent: 3897080 (1975-07-01), Isom
patent: D249032 (1978-08-01), Tarran
patent: 4258826 (1981-03-01), Murray
patent: 4494626 (1985-01-01), Ast
patent: 4690248 (1987-09-01), Killeen
patent: 4848782 (1989-07-01), Schmidt
patent: 4934485 (1990-06-01), Purkapile
patent: D338306 (1993-08-01), White et al.
patent: 5329979 (1994-07-01), Miller et al.
patent: 5382032 (1995-01-01), Wilson
patent: 5484160 (1996-01-01), Ek
patent: 5642895 (1997-07-01), Wunder
patent: 6109628 (2000-08-01), Scheper
patent: 6170839 (2001-01-01), Kizewski
patent: 6173811 (2001-01-01), Tornabene et al.
patent: 6328330 (2001-12-01), Haaser
patent: 6361057 (2002-03-01), Carter
patent: 6708993 (2004-03-01), Feik
patent: 2001/0013707 (2001-08-01), Lindwall
Chin-Shue Alvin
Killough B. Craig
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