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经营范围
发明名称
Groutable rock bolt assembly
摘要
申请公布号
GB1007392(A)
申请公布日期
1965.10.13
申请号
GB19630042189
申请日期
1963.06.18
申请人
CHESTER IRVING WILLIAMS
发明人
分类号
A63H33/04;E21D20/02
主分类号
A63H33/04
代理机构
代理人
主权项
地址
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