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发明名称
PISTON VACUUM PUMP
摘要
申请公布号
SU1698480(A2)
申请公布日期
1991.12.15
申请号
SU19894749864
申请日期
1989.10.11
申请人
APPEL SEMEN G
发明人
APPEL SEMEN G,SU
分类号
F04B31/00;F04B3/00;F04B9/127;F04B43/00
主分类号
F04B31/00
代理机构
代理人
主权项
地址
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