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发明名称
POSITIVE PRESSURE/ NEGATIVE PRESSURE SWITCHING MECHANISM
摘要
申请公布号
JPH0328590(A)
申请公布日期
1991.02.06
申请号
JP19890161848
申请日期
1989.06.22
申请人
FUJITSU LTD
发明人
SUGIYAMA YUICHI
分类号
F16K31/12;F15B11/06
主分类号
F16K31/12
代理机构
代理人
主权项
地址
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