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发明名称
Method of producing roadrock
摘要
申请公布号
US3403864(A)
申请公布日期
1968.10.01
申请号
US19660556163
申请日期
1966.06.08
申请人
HOUDAILLE INDUSTRIES, INC.
发明人
CORMICAN RUSSELL C.;KEENE CHARLES B.
分类号
E01C21/00
主分类号
E01C21/00
代理机构
代理人
主权项
地址
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