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发明名称
CONCRETE PIPE AND APPARATUS FOR MAKING THE SAME
摘要
申请公布号
CA506824(A)
申请公布日期
1954.10.26
申请号
CAD506824
申请日期
申请人
LOCK JOINT PIPE COMPANY
发明人
HUGH F. KENNISON
分类号
主分类号
代理机构
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