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发明名称
SELECTIVE DOUBLE BACKSEAT FOR VALVE STEMS
摘要
申请公布号
CA2094309(A1)
申请公布日期
1993.10.31
申请号
CA19932094309
申请日期
1993.04.19
申请人
FMC CORPORATION
发明人
WAFER, DON B.;WILLIAMS, MICHAEL R.
分类号
F16K41/04;(IPC1-7):F16K41/04
主分类号
F16K41/04
代理机构
代理人
主权项
地址
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