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发明名称
An improved filtering device for fitting to the stem of a tobacco pipe, cigar or cigarette holder
摘要
申请公布号
GB529643(A)
申请公布日期
1940.11.26
申请号
GB19390015239
申请日期
1939.05.22
申请人
JOHN PETER WILLIAM BERGER
发明人
分类号
A24F1/00
主分类号
A24F1/00
代理机构
代理人
主权项
地址
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IMAGE FORMING APPARATUS
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