CN209030125U - 游梁式抽油机配置工频直启的晃电后智能再启动装置 - Google Patents
游梁式抽油机配置工频直启的晃电后智能再启动装置 Download PDFInfo
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Effective date of registration: 20200921 Address after: 100000 Beijing city Dongcheng District No. 16 Andrew Patentee after: PetroChina Company Limited Address before: 063200 No. 261, New Town Street, Tang Hai Town, Caofeidian District, Tangshan City, Hebei Patentee before: TANGSHAN JIDONG PETROLEUM MACHINERY Co.,Ltd. |
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Effective date of registration: 20201010 Address after: No.10 Guoan Road, comprehensive bonded zone, Caofeidian Industrial Zone, Tangshan City, Hebei Province Patentee after: TANGSHAN JIDONG PETROLEUM MACHINERY Co.,Ltd. Patentee after: PetroChina Company Limited Address before: 100000 Beijing city Dongcheng District No. 16 Andrew Patentee before: PetroChina Company Limited |
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