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经营范围
发明名称
MUCKING APPARATUS
摘要
申请公布号
US3547211(A)
申请公布日期
1970.12.15
申请号
USD3547211
申请日期
1969.07.15
申请人
ALFRED W. CHRISTENSEN;RICHARD L. MARSING
发明人
ALFRED W. CHRISTENSEN;RICHARD L. MARSING
分类号
E21D1/00;(IPC1-7):E21D1/06
主分类号
E21D1/00
代理机构
代理人
主权项
地址
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