Fire escape – ladder – or scaffold – Stackable
Reexamination Certificate
2006-02-07
2006-02-07
Thompson, II, Hugh B. (Department: 3634)
Fire escape, ladder, or scaffold
Stackable
C182S129000, C248S228400, C248S230400
Reexamination Certificate
active
06994187
ABSTRACT:
A scaffold pick-up device having a vertical joint clamp which bridges a vertical scaffold joint to stiffen the bridged vertical joint, and a scaffold lift assembly, which attaches onto the top section of a vertical scaffold member and has an attachment point for a shackle or other lifting gear.
REFERENCES:
patent: 3385545 (1968-05-01), Patton
patent: 4624374 (1986-11-01), Murtaugh
patent: 4892276 (1990-01-01), Alessio
patent: 4928911 (1990-05-01), Hardtke
patent: 5727762 (1998-03-01), Cosentino
Hayman Yates W.
Hensley Ken
Jones Walker Waechter Poitevent Carrere & Denegre, LLP
Thompson II Hugh B.
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