Corrugated drainage pipe with protuberances
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United States of America Patent
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May 17, 2016
Grant Date -
N/A
app pub date -
Mar 13, 2014
filing date -
Mar 15, 2013
priority date (Note) -
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Abstract
A corrugated pipe includes an annular corrugated pipe body made of resilient material circumscribing a hollow conduit and including alternating annular ribs and annular valleys extending along a longitudinal axis thereof. At least one protuberance integral with the pipe body and having a protuberance sidewall extends radially outward from a modified annular rib to an apex positioned outwardly from the modified annular rib, the protuberance sidewall extends into the valleys immediately adjacent the modified annular rib.
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