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发明名称
Drilling machine
摘要
申请公布号
US1902055(A)
申请公布日期
1933.03.21
申请号
US19310550239
申请日期
1931.07.11
申请人
BESTE ERNST A
发明人
BESTE ERNST A.
分类号
B23B39/00
主分类号
B23B39/00
代理机构
代理人
主权项
地址
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