Concrete mixing drum manufacturing method
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United States of America Patent
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Mar 16, 2010
Grant Date -
May 19, 2005
app pub date -
Dec 23, 2004
filing date -
Oct 8, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A method for making a concrete mixing drum includes forming a first layer of at least one polymeric material having a surface providing at least a portion of a barrel wall of the drum and a spiral mixing blade projecting from the wall on an inner surface of the drum and forming a second layer on the formed first layer.
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