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发明名称
FLEXIBLE METAL DUCT OF RECTANGULAR OR FLAT OVAL CONFIGURATION AND METHOD AND APPARATUS FOR MAKING THE SAME
摘要
申请公布号
GB1514412(A)
申请公布日期
1978.06.14
申请号
GB19760002086
申请日期
1976.01.20
申请人
JOHNS MANVILLE CORP
发明人
分类号
B21C37/15;B21D17/02;B21D31/04;(IPC1-7):F16L11/16;B21D22/00
主分类号
B21C37/15
代理机构
代理人
主权项
地址
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