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一种节能式液压抽油装置及液压抽油方法

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Affilication of Author(s):材料科学与工程学院

Patent Applicant:zhubo

Type of Patent:发明

Application Number:201610270530.7

Number of Inventors:1

Service Invention or Not:no

Application Date:2016-04-27

Publication Date:2018-08-31

Authorization Date:2018-08-31

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