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发明名称
CONCRETE PIPE
摘要
申请公布号
CA333268(A)
申请公布日期
1933.06.13
申请号
CAD333268
申请日期
申请人
THE PRESSURE PIPE COMPANY OF CANADA;THE CONSOLIDATED PIPE COMPANY
发明人
JAMES H. SHERRARD
分类号
主分类号
代理机构
代理人
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