Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6523239 | Die for assembling metal spool having high torque transmitting capacity between spool components | Richard L. Peterson, Walter P. Pietruch, Donald Leni | 2003-02-25 |
| 6419184 | Wooden spool held together with novel tie rod assembly and method of assembling the same between a pair of dies | Richard L. Peterson, Walter P. Pietruch, Richard E. Guzzardo | 2002-07-16 |
| 6289570 | Die and method for assembling metal spool having high torque transmitting capacity between spool components | Richard L. Peterson, Walter P. Pietruch, Donald Leni | 2001-09-18 |
| 6267324 | Metal spool having high torque transmitting capacity between spool components | Richard L. Peterson, Donald Leni, Walter P. Pietruch | 2001-07-31 |