Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9279361 | Piston bowl with spray jet targets | Charles E. Roberts, Jr. | 2016-03-08 |
| 8677974 | Piston bowl with flat bottom | Charles E. Roberts, Jr., Chad Stovell | 2014-03-25 |
| 8555854 | Piston bowl with deflecting features | Charles E. Roberts, Jr., Thomas W. Ryan, III | 2013-10-15 |
| 8459229 | Piston bowl with spray jet targets | Charles E. Roberts, Jr. | 2013-06-11 |