Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7118086 | Pinch valve with inlet and outlet ports | John C. Estapa, Corey W. Cerwinske, Richard P. Borglum, Perry Anderson | 2006-10-10 |
| 6651908 | Foam marking device for yards | Richard P. Borglum, Kevin M. Kraus | 2003-11-25 |
| 6314996 | Foam marking system | Richard P. Borglum, Corey W. Cerwinske | 2001-11-13 |