Assignee
HARBIN SURFICS ELECTRICAL TECH INC
CN·2 granted patents·0 citations·filing 2017–2017
Top patents by PatentIndex Score
2 records- 0134US10539129B2Electric machine driving method and system under non-conventional work mode of oil pumping unitHARBIN SURFICS ELECTRICAL TECH INC·Filed 2017·Granted Jan 21, 2020·0 cites·1 claims
- 0229US10502038B2Combined operation method for work modes of walking beam pumping unitHARBIN SURFICS ELECTRICAL TECH INC·Filed 2017·Granted Dec 10, 2019·0 cites·7 claims
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