Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5927690 | Push-pull chain drive door operator system | James White, James W. Stottsberry | 1999-07-27 |
| 5664372 | Clutchless screw drive door operator | Gregory E. Williams, James White, James W. Stottsberry | 1997-09-09 |
| 5568704 | Clutchless screw drive door operator | Gregory E. Williams, James White, James W. Stottsberry | 1996-10-29 |
| 5243784 | Limit switch arrangement for garage door operator | Louis G. Whitaker, Gregory E. Williams, Thomas Angelini | 1993-09-14 |
| 5221869 | Motor assembly for chain-drive garage door operator | Gregory E. Williams, Terry Lee Crock, Thomas Angelini | 1993-06-22 |