Issued Patents All Time
Showing 1–3 of 3 patents
| 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, Ewald A. Oppmann | 2003-02-25 |
| 6289570 | Die and method for assembling metal spool having high torque transmitting capacity between spool components | Richard L. Peterson, Walter P. Pietruch, Ewald A. Oppmann | 2001-09-18 |
| 6267324 | Metal spool having high torque transmitting capacity between spool components | Richard L. Peterson, Ewald A. Oppmann, Walter P. Pietruch | 2001-07-31 |