Valve spring fixing device and plunger pump

Assignee

• Yantai Jereh Petroleum Equipment & Technologies Co.

Inventors

• Wenjie Deng (24 patents)
• Baoguo Jian (6 patents)
• Weichen Liu (19 patents)
• Peng Li (73 patents)
• Jixin Wang (17 patents)
• Xiaosong Wei (5 patents)
• Chen Jiang (19 patents)
• Xiaobin Li (31 patents)
• Wenping Cui (9 patents)
• Anpeng GE (4 patents)

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