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发明名称
Apparatus and method for forming a hollow body of concrete or the like
摘要
申请公布号
US2829418(A)
申请公布日期
1958.04.08
申请号
US19530395805
申请日期
1953.12.02
申请人
LOCK JOINT PIPE COMPANY
发明人
TRUSWELL WILLIAM R.
分类号
B28B21/24
主分类号
B28B21/24
代理机构
代理人
主权项
地址
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