Dou Lei
USPTO Trademark & Patent Filings
Trademark applications and grants for Dou Lei. Dou Lei has 1 trademark applications. The latest application filed is for "RAVANA"
| Patent Application | Date |
|---|---|
| POWER-SPLIT HYDRO-MECHANICAL HYBRID TRANSMISSION SYSTEM WITH AUTOMATIC ADJUSTMENT FUNCTION 20220145972 - 17/430733 ZHU; Zhen ; et al. | 2022-05-12 |
| Power-split hydro-mechanical hybrid transmission system with automatic adjustment function 11,313,447 - 17/430,733 Zhu , et al. April 26, 2 | 2022-04-26 |
Mark Image Registration | Serial | Trademark Application Date |
|---|---|
"RAVANA" 87775598 |
RAVANA 2018-01-30 |
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