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发明名称
Improved apparatus for centrifugally moulding concrete pipes and other tubular bodies
摘要
申请公布号
GB398983(A)
申请公布日期
1933.09.28
申请号
GB19320020297
申请日期
1932.07.18
申请人
RALPH WILLIAMS
发明人
分类号
B28B21/30
主分类号
B28B21/30
代理机构
代理人
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