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经营范围
发明名称
Casing ripper
摘要
申请公布号
US1776025(A)
申请公布日期
1930.09.16
申请号
US19270227198
申请日期
1927.10.19
申请人
HINDERLITER FRANK J
发明人
HINDERLITER FRANK J.
分类号
E21B29/00
主分类号
E21B29/00
代理机构
代理人
主权项
地址
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