发明名称 |
Method and apparatus for making tobacco smoke filter |
摘要 |
This invention relates to a cigarette filter composed of two concentric cylindrical layers of fibrous filter materials, in which the inner cylindrical layer has a lower draw resistance than the outer cylindrical layer, and a method and apparatus for the manufacture thereof.
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申请公布号 |
US4088065(A) |
申请公布日期 |
1978.05.09 |
申请号 |
US19770790649 |
申请日期 |
1977.04.25 |
申请人 |
LIGGETT & MYERS INCORPORATED |
发明人 |
HALL, FLOYD VAN |
分类号 |
A24D3/02;A24D3/10;(IPC1-7):A24C5/50 |
主分类号 |
A24D3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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