Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7464750 | Rotary fluid-sealing structure using speed-reduction stages | John Schroeder | 2008-12-16 |
| 5378078 | Manhole cover | Michael E. Lewis, Richard C. Lewis | 1995-01-03 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7464750 | Rotary fluid-sealing structure using speed-reduction stages | John Schroeder | 2008-12-16 |
| 5378078 | Manhole cover | Michael E. Lewis, Richard C. Lewis | 1995-01-03 |