CN210343217U - 一种顶部驱动钻井装置的平衡机构 - Google Patents
一种顶部驱动钻井装置的平衡机构 Download PDFInfo
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- CN210343217U CN210343217U CN201920903905.8U CN201920903905U CN210343217U CN 210343217 U CN210343217 U CN 210343217U CN 201920903905 U CN201920903905 U CN 201920903905U CN 210343217 U CN210343217 U CN 210343217U
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Denomination of utility model: A balancing mechanism of top drive drilling device Effective date of registration: 20210429 Granted publication date: 20200417 Pledgee: Panjin science and technology Financing Guarantee Co.,Ltd. Pledgor: PANJIN LIAOHE OILFIELD TIANYI PETROLEUM EQUIPMENT Co.,Ltd. Registration number: Y2021210000022 |
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Date of cancellation: 20220512 Granted publication date: 20200417 Pledgee: Panjin science and technology Financing Guarantee Co.,Ltd. Pledgor: PANJIN LIAOHE OILFIELD TIANYI PETROLEUM EQUIPMENT Co.,Ltd. Registration number: Y2021210000022 |
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Denomination of utility model: Balance mechanism of top drive drilling device Effective date of registration: 20220516 Granted publication date: 20200417 Pledgee: Panjin science and technology Financing Guarantee Co.,Ltd. Pledgor: PANJIN LIAOHE OILFIELD TIANYI PETROLEUM EQUIPMENT Co.,Ltd. Registration number: Y2022210000043 |
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Date of cancellation: 20230601 Granted publication date: 20200417 Pledgee: Panjin science and technology Financing Guarantee Co.,Ltd. Pledgor: PANJIN LIAOHE OILFIELD TIANYI PETROLEUM EQUIPMENT Co.,Ltd. Registration number: Y2022210000043 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
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Denomination of utility model: A balancing mechanism for top drive drilling equipment Effective date of registration: 20230605 Granted publication date: 20200417 Pledgee: Panjin science and technology Financing Guarantee Co.,Ltd. Pledgor: PANJIN LIAOHE OILFIELD TIANYI PETROLEUM EQUIPMENT Co.,Ltd. Registration number: Y2023210000131 |
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