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经营范围
发明名称
Smoking tobacco
摘要
申请公布号
US2207644(A)
申请公布日期
1940.07.09
申请号
US19380221235
申请日期
1938.07.25
申请人
LAWSON SWAIN ROGER
发明人
SWAIN ROGER LAWSON
分类号
A24B15/30
主分类号
A24B15/30
代理机构
代理人
主权项
地址
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