Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8844241 | Methods and apparatus for providing linings on concrete structures | George David Richardson, Semion Krivulin, James Ryan Johnson | 2014-09-30 |
| 8458969 | Stay-in-place form systems for form-work edges, windows and other building openings | George David Richardson, Semion Krivulin | 2013-06-11 |