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发明名称
Tamping tool
摘要
申请公布号
US1945133(A)
申请公布日期
1934.01.30
申请号
US19310579398
申请日期
1931.12.07
申请人
BROWN HUGH S
发明人
BROWN HUGH S.
分类号
B25D11/10;E21B1/16
主分类号
B25D11/10
代理机构
代理人
主权项
地址
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