B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
B29D 16/00 (2006.01) B29C 47/00 (2006.01) B29C 57/00 (2006.01) B29D 23/00 (2006.01) F16L 9/19 (2006.01) F16L 11/15 (2006.01) F16L 25/00 (2006.01) B29C 47/12 (2006.01)
Patent
CA 2411878
A piece of corrugated pipe cut from a longer length of pipe is provided with a pipe coupling part by subjecting one or more of the corrugations on the pipe to heat and pressure collapsing the one or more corrugations to form a spigot on the piece of pipe.
Lupke Manfred A. A.
Lupke Stefan A.
Dennison Associates
Lupke Manfred A. A.
Lupke Stefan A.
LandOfFree
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