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经营范围
发明名称
STRUCTURAL BEAM DRILLING MACHINE
摘要
申请公布号
US3584523(A)
申请公布日期
1971.06.15
申请号
USD3584523
申请日期
1969.06.18
申请人
DOMINION BRIDGE CO. LTD.
发明人
GEORGE WILLIAM P. EVANS
分类号
B23B39/22;B23B41/00;(IPC1-7):B23B39/22
主分类号
B23B39/22
代理机构
代理人
主权项
地址
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