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发明名称
摘要
申请公布号
FR2194905(B1)
申请公布日期
1978.07.21
申请号
FR19730026158
申请日期
1973.07.17
申请人
AMEY ROADSTONE CORP LTD
发明人
分类号
B28B21/56;B28B21/62;B28B21/68;B29C57/00;B29C67/00;B29C70/16;F16L9/08;(IPC1-7):F16L9/08;B28B21/30;B28B23/02
主分类号
B28B21/56
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代理人
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