Pipes and tubular conduits – Miscellaneous
Reexamination Certificate
2002-03-04
2003-12-02
Hook, James (Department: 3752)
Pipes and tubular conduits
Miscellaneous
C428S586000, C072S253100
Reexamination Certificate
active
06655415
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to copper tubing produced by continuous extrusion apparatus.
BACKGROUND OF THE INVENTION
WO96/29162 discloses continuous extrusion apparatus for the production of copper tubing having a rotatable wheel formed with a plurality of circumferential grooves provided with exit apertures in a die top and abutments displaced in the direction of rotation from the exit apertures.
REFERENCES:
patent: 4238221 (1980-12-01), Sevensson
patent: 4462234 (1984-07-01), Fiorentino et al.
patent: 4598567 (1986-07-01), Backus
patent: 5119660 (1992-06-01), Koppinen et al.
patent: 5152163 (1992-10-01), Hawkes et al.
patent: 5284428 (1994-02-01), Sinha et al.
patent: 5595084 (1997-01-01), Yano
patent: 5813270 (1998-09-01), Carter
patent: 2002/0121121 (2002-09-01), Dawson et al.
patent: 0 398 747 (1990-11-01), None
patent: 0 822 016 (1998-02-01), None
patent: 2 078 584 (1982-01-01), None
patent: 2 103 527 (1983-02-01), None
patent: 2 209 295 (1989-05-01), None
patent: 2 326 121 (1998-12-01), None
patent: 57-159213 (1982-10-01), None
patent: 59-223113 (1984-12-01), None
International Search Report (4 pgs.) for PCT/GB00/03933, dated Feb. 6, 2001.
Dawson John
Hawkes Daniel John
Jones Phillip A.
Laidlow Stephen James
BWE Limited
Hook James
Shlesinger & Arkwright & Garvey LLP
LandOfFree
Copper tubing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Copper tubing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Copper tubing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3180636