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发明名称
Method and apparatus for manufacturing sewer pipe and similar articles
摘要
申请公布号
US1826586(A)
申请公布日期
1931.10.06
申请号
US19300423765
申请日期
1930.01.27
申请人
LACLEDE-CHRISTY CLAY PRODUCTS COMPANY
发明人
WILLIAMS HERMAN P.
分类号
B28B21/38
主分类号
B28B21/38
代理机构
代理人
主权项
地址
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