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发明名称
EARTH BORING DRILL
摘要
申请公布号
CA315893(A)
申请公布日期
1931.10.06
申请号
CAD315893
申请日期
申请人
THE CHICAGO PNEUMATIC TOOL COMPANY
发明人
CLARENCE EDWARD REED
分类号
主分类号
代理机构
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