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发明名称
Drill support
摘要
申请公布号
US1808051(A)
申请公布日期
1931.06.02
申请号
US19300421193
申请日期
1930.01.16
申请人
MASLEWSKI JOSEPH P
发明人
MASLEWSKI JOSEPH P.
分类号
B23B51/12
主分类号
B23B51/12
代理机构
代理人
主权项
地址
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