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发明名称
HOLD-DOWN BEARING OF INSERT OIL-WELL SUCKER-ROD PUMP
摘要
申请公布号
SU1710834(A1)
申请公布日期
1992.02.07
申请号
SU19904801043
申请日期
1990.01.23
申请人
GRABOVETSKIJ VLADIMIR L,SU
发明人
GRABOVETSKIJ VLADIMIR L,SU
分类号
F04B47/02
主分类号
F04B47/02
代理机构
代理人
主权项
地址
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