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发明名称
Machine for making concrete pipe
摘要
申请公布号
US2467631(A)
申请公布日期
1949.04.19
申请号
US19470728693
申请日期
1947.02.14
申请人
PARKER LAURIE F
发明人
PARKER LAURIE F.
分类号
B28B21/26
主分类号
B28B21/26
代理机构
代理人
主权项
地址
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