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United States of America Patent
Stats
-
Nov 13, 1984
Grant Date -
N/A
app pub date -
Jul 2, 1982
filing date -
Jul 6, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tobacco smoke filter comprising an axially elongate filtering core 4, and a plugwrap 2 in surrounding engagement with the core and extending axially therebeyond to define a recess 6, the outer surface of the plugwrap providing at least one channel 8 extending longitudinally of the filter from an end 16 thereof.
First Claim
Family
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Cited Art Landscape
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