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发明名称
RAIL SAWING AND DRILLING APPARATUS
摘要
申请公布号
CA318794(A)
申请公布日期
1932.01.12
申请号
CAD318794
申请日期
申请人
JOHN A. MCGREW
发明人
JOHN A. MCGREW
分类号
主分类号
代理机构
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