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发明名称
Apparatus for the manufacture of concrete pipe
摘要
申请公布号
US2189071(A)
申请公布日期
1940.02.06
申请号
US19360106747
申请日期
1936.10.21
申请人
KOPP GEORGE W
发明人
KOPP GEORGE W.
分类号
B28B21/80
主分类号
B28B21/80
代理机构
代理人
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地址
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