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发明名称
Rohrfaenger
摘要
申请公布号
DE589185(C)
申请公布日期
1933.12.04
申请号
DE1931B151569D
申请日期
1931.08.11
申请人
BYRON JACKSON CO.
发明人
分类号
E21B23/01
主分类号
E21B23/01
代理机构
代理人
主权项
地址
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