Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11499308 | Structure-lining apparatus with adjustable width and tool for same | George David Richardson, Semion Krivulin, Zi Li Fang | 2022-11-15 |
| 11053676 | Structure-lining apparatus with adjustable width and tool for same | George David Richardson, Semion Krivulin, Zi Li Fang | 2021-07-06 |
| 10731333 | Structure-lining apparatus with adjustable width and tool for same | George David Richardson, Semion Krivulin, Zi Li Fang | 2020-08-04 |