Metal working – Method of mechanical manufacture – Work holding
Reexamination Certificate
2007-01-02
2007-01-02
Hong, John C. (Department: 3726)
Metal working
Method of mechanical manufacture
Work holding
C029S525110
Reexamination Certificate
active
10494373
ABSTRACT:
A method for using a clamp for detachable connection of a column tray to a support ring in a column including using a clamp which includes a bolt lower clamp part connected to the bolt. The lower clamp part has at least one orifice through which a liquid present in the column can flow away.
REFERENCES:
patent: 4174363 (1979-11-01), Bruckert
patent: 5547617 (1996-08-01), Lee et al.
patent: 5788895 (1998-08-01), Altinger et al.
patent: 1125406 (1962-03-01), None
patent: 1920268 (1970-10-01), None
patent: 0856343 (1998-08-01), None
U.S. Appl. No. 10/515,639, filed Dec. 7, 2004, Hammon et al.
U.S. Appl. No. 10/494,373, filed May 13, 2004, Hammon et al.
Hammon Ulrich
Schroeder Juergen
BASF - Aktiengesellschaft
Hong John C.
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