Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6611205 | Gate operator safety system | David C. Guthrie | 2003-08-26 |
| D324511 | Switch unit for a garage door operator or the like | John F. Ginther, Kim E. Burrichter, David C. Guthrie, Mark K. Lucchi | 1992-03-10 |
| D322386 | Keyless lock | John F. Ginther, Kim E. Burrichter, David C. Guthrie, Mark K. Lucchi | 1991-12-17 |