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发明名称
Method for making molded sandwich tubular septic tanks and other molded tubular articles
摘要
申请公布号
US3309762(A)
申请公布日期
1967.03.21
申请号
US19630263989
申请日期
1963.03.08
申请人
HARPER INDUSTRIES, INC.
发明人
HARPER ROSCOE H.
分类号
B29C33/00;B29C41/04;B29C41/20;B29C41/22;B29C41/38;B29C70/32;E03F5/02;E03F5/10;E03F11/00
主分类号
B29C33/00
代理机构
代理人
主权项
地址
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