Pocket-type charcoal filter and cigarette made therewith
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 22, 1980
Issued Date -
N/A
app pub date -
Mar 20, 1978
filing date -
Mar 18, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The apparatus for making the filter forms a stream of tow into a U-shaped trough so that charges of charcoal can be injected into the trough by a charcoal wheel. The shape of the tow is ensured by feeding the tow into a funnel-shaped passageway from below the level of the passageway, the tow remains U-shaped without the need of any other means.
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Family
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Cited Art Landscape
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