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1. WO2021057116 - RESISTANCE REDUCTION DEVICE

CN110671054Damping device
Appl.Date 25.09.2019
Appl.No 201910912292.9 Applicant SICHUAN HONGHUA PETROLEUM EQUIPMENT CO., LTD. Related Type IC5
Sole priority inside the family.
Pub.Kind A
Pub.Date 10.01.2020
WO/2021/057116RESISTANCE REDUCTION DEVICE
Appl.Date 18.06.2020
Appl.No PCT/CN2020/096754 Applicant SICHUAN HONGHUA PETROLEUM EQUIPMENT CO., LTD Related Type IC1
PCT application from which the family originated.
Pub.Kind A Pub.Lang zh
Pub.Date 01.04.2021