Assignee
APEX OILFIELD EQUIPMENT QINGDAO CO LTD
CN·2 granted patents·1 pending application·0 citations·filing 2021–2023
Top patents by PatentIndex Score
3 records- 0154US12540611B2Beam pumping unit and design method for beam pumping unitAPEX OILFIELD EQUIPMENT QINGDAO CO LTD·Filed 2023·Granted Feb 3, 2026·0 cites·9 claims
- 0246US2023043079A1Long stroke beam pumping unitAPEX OILFIELD EQUIPMENT QINGDAO CO LTD·Filed 2022·Application pending·0 cites
- 0345US12320424B2Lifting mechanism for belt type pumping unitAPEX OILFIELD EQUIPMENT QINGDAO CO LTD·Filed 2021·Granted Jun 3, 2025·0 cites·15 claims
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