Smoke filter containing particulate smoke modifying additive
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United States of America Patent
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Sep 2, 1997
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N/A
app pub date -
Nov 7, 1996
filing date -
Nov 19, 1990
priority date (Note) -
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Abstract
A filter having a longitudinal axis and having a tube formed by at least one strip [2] which is pre-coated with particulate smoke modifying additive [4] adhering thereto and which curves through at least 360.degree. about the longitudinal axis.
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