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发明名称
Target device
摘要
申请公布号
US1912873(A)
申请公布日期
1933.06.06
申请号
US19320586342
申请日期
1932.01.13
申请人
ARTHUR VANHOUTTEGHEM
发明人
VANHOUTTEGHEM ARTHUR
分类号
F41J3/00 21B34/00;E21B34/12;(IPC1-7):E21B33/12;E21B43/00
主分类号
F41J3/00
代理机构
代理人
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地址
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