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发明名称
SEALS AND VALVES
摘要
申请公布号
GB8918741(D0)
申请公布日期
1989.09.27
申请号
GB19890018741
申请日期
1989.08.16
申请人
TABATABAI, SEYED H
发明人
分类号
F16K1/44;F16K41/00
主分类号
F16K1/44
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