Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5074265 | Rotary valve with facility for stratified combustion in the internal combustion engine | George Ristin | 1991-12-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5074265 | Rotary valve with facility for stratified combustion in the internal combustion engine | George Ristin | 1991-12-24 |