Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1980-08-26
1982-06-15
Epstein, Henry F.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
132 40, 264177R, 428188, B32B 108
Patent
active
043351689
ABSTRACT:
An extrusion consisting of a tube having a circular outer cross section, a number of equidistantly spaced, radially extending, elongate ridges around the tube, and a groove between each pair of adjacent ridges.
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Capella Inc.
Epstein Henry F.
Field Lawrence I.
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