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发明名称
METHOD AND APPARATUS FOR PRODUCING FLEXIBLE METAL DUCTS
摘要
申请公布号
US3538728(A)
申请公布日期
1970.11.10
申请号
USD3538728
申请日期
1967.05.15
申请人
JOHNS MANVILLE CORP.
发明人
JOHN MASSEY TRIBEY
分类号
F16L59/14;B21C37/12;B21D15/04;F16L11/15;F16L11/16;F16L59/153;(IPC1-7):B21J7/26
主分类号
F16L59/14
代理机构
代理人
主权项
地址
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