Issued Patents 2019
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10428629 | Methods and systems for directly driving a beam pumping unit by a rotating motor | Hangxian Liu | 2019-10-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10428629 | Methods and systems for directly driving a beam pumping unit by a rotating motor | Hangxian Liu | 2019-10-01 |