Pipes and tubular conduits – Flexible – Corrugated
Patent
1979-05-18
1981-05-26
Bryant, III, James E.
Pipes and tubular conduits
Flexible
Corrugated
138138, 138143, 138145, 138174, 138DIG2, F16L 1114
Patent
active
042692342
ABSTRACT:
A high strength pipe comprising a corrugated metallic tube defining a series of annular troughs therewithin and a resinous material lining the interior surface to fill the troughs and create a smooth and corrosion resistant surface.
REFERENCES:
patent: 3479621 (1869-11-01), Martin
patent: 3550639 (1970-12-01), Okuda
Goetz Nelson F.
Johnson Doyle F.
Bryant III James E.
Tri State Culvert Corporation
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