Refining element
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United States of America Patent
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Jul 15, 2003
Grant Date -
N/A
app pub date -
Sep 10, 2001
filing date -
Mar 19, 1999
priority date (Note) -
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Abstract
Refining elements for use in a disk refiner are provided, in which the refining elements include an outer surface with a plurality of raised bars separated by grooves, the raised bars including an upper surface having a first longitudinal edge and at least one step defining a second longitudinal edge at an intermediate height between the first longitudinal edge and the outer surface of the refining element.
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