Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5812895 | Camera with negative identification system | Dale R. DuVall, Jerry W. Lindenfelser, Patrick J. Gilligan, Roger M. Johnson, Charles Swanson | 1998-09-22 |
| 5329325 | Synchronized zoom electronic camera system | Denis L. Larson, Rolf D. Ingersoll, Jerome W. Lindenfelser, Roger M. Johnson | 1994-07-12 |