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United States of America Patent
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Jun 28, 2011
Grant Date -
Jun 3, 2010
app pub date -
Jan 29, 2010
filing date -
Jun 8, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A nonplanar, thermoplastic polymeric film having a top surface, a bottom surface, a midline, and a series of peaks and valleys oscillating around the midline and forming continuous ridges in a first direction on both the top surface and the bottom surface of the film. The nonplanar, thermoplastic polymeric film has two or more polymer layers with at least one polymer layer partitioned disproportionally in the peaks such that at least two of the two or more polymer layers vary in thickness across the width of the nonplanar, thermoplastic polymeric film.
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