Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5123559 | Built-up inner floating ceiling for use in an oil storage tank | Kong Z. Rui, Shi ZHI | 1992-06-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5123559 | Built-up inner floating ceiling for use in an oil storage tank | Kong Z. Rui, Shi ZHI | 1992-06-23 |