Patents
[12]关绍巍,祝世洋,代中明,岳喜贵,姜振华,王贵宾. 一种防腐耐磨防结垢抽油泵柱塞的制备方法[P]. 吉林:CN102500537A,2012-06-20.
2018-09-02 Hits:
Application Date:2018-09-12
Publication Date:2018-09-12
Authorization Date:2018-09-12
Service Invention or Not:no
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