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经营范围
发明名称
Boring machines
摘要
申请公布号
US2878693(A)
申请公布日期
1959.03.24
申请号
US19540410548
申请日期
1954.02.16
申请人
DHB CORP.
发明人
CARLSTEDT RAGNAR LEONARD
分类号
B23B41/02
主分类号
B23B41/02
代理机构
代理人
主权项
地址
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