Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4918864 | Variable speed door operator | John T. Lunenschloss, Raymond A. Beckeman, Glen M. Gregerson | 1990-04-24 |
| 4905345 | Track system for sliding door | John T. Lunenschloss, Raymond A. Beckeman, Glen M. Gregerson | 1990-03-06 |
| 4887954 | Vehicle restraint | Glen M. Gregerson, John T. Lunenschloss, Raymond A. Beckeman | 1989-12-19 |