Cigarette filter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 22, 1981
Grant Date -
N/A
app pub date -
Aug 13, 1979
filing date -
Aug 13, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tar and nicotine filter device attachable to one end of a cigarette, including a molded, hard plastic tube for placing in a persons mouth, the tube containing two filter cartridges spaced apart by a tar trap therebetween, the invention in one design containing a cotton wad in the tar trap that is made to be visible so to inform a smoker when the device is tar saturated so to be discarded, and in another design of the invention, the tube is made of two interfitted pack so to allow opening and replacing the saturated cartridges.
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Family
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Cited Art Landscape
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