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发明名称
METHOD OF ADJUSTING TRAVEL LENGTH OF POLISHED ROD OF ROPE HANGER OF WELL SUCKER-ROD PUMP ROCKER
摘要
申请公布号
SU1333838(A1)
申请公布日期
1987.08.30
申请号
SU19853956325
申请日期
1985.09.18
申请人
KIRSH BORIS A
发明人
KIRSH BORIS A,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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