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发明名称
摘要
申请公布号
NL7100445(A)
申请公布日期
1971.07.28
申请号
NL19710000445
申请日期
1971.01.13
申请人
发明人
分类号
F16L1/18;F16L1/19;F16L1/20;(IPC1-7):F16L1/00
主分类号
F16L1/18
代理机构
代理人
主权项
地址
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