Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7754038 | Cross-grade spin welding apparatus and method | C. Robert Ripplinger | 2010-07-13 |
| 7534316 | Cross-grade spin welding apparatus and method | C. Robert Ripplinger | 2009-05-19 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7754038 | Cross-grade spin welding apparatus and method | C. Robert Ripplinger | 2010-07-13 |
| 7534316 | Cross-grade spin welding apparatus and method | C. Robert Ripplinger | 2009-05-19 |