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发明名称
UNDERGROUND PIPE INSTALLATION AND METHOD
摘要
申请公布号
CA664824(A)
申请公布日期
1963.06.11
申请号
CAD664824
申请日期
申请人
CONCRETE THERMAL CASINGS
发明人
LINCOLN L. LOPER, JR.
分类号
主分类号
代理机构
代理人
主权项
地址
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