Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6141861 | Apparatus and method for control of roller chain assembly | David Frey | 2000-11-07 |
| 6029342 | Apparatus kit and method for roller chain assembly | David Frey | 2000-02-29 |