KE; YANGCHUAN
Patent Applications and Registrations
Patent applications and USPTO patent grants for KE; YANGCHUAN.The latest application filed is for "drilling fluid lubricant and preparation method and use thereof".
- KE; YANGCHUAN - BEIJING CN
| Patent | Date |
|---|---|
| Drilling Fluid Lubricant And Preparation Method And Use Thereof App 20210054254 - KE; YANGCHUAN ; et al. | 2021-02-25 |
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