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发明名称
VACUUM-TIGHT JOINT
摘要
申请公布号
PL113422(B1)
申请公布日期
1980.12.31
申请号
PL19770195913
申请日期
1977.02.09
申请人
发明人
分类号
F16L;F16L17/06;F16L19/08;H01J5/38;H01J9/40;(IPC1-7):F16L17/06
主分类号
F16L
代理机构
代理人
主权项
地址
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