Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7082380 | Refrigeration monitor | David J. Wiebe, Lawrence Johnson | 2006-07-25 |
| D314000 | Refrigerated cabinet | Robert Allen Johnson | 1991-01-22 |
| 4972682 | Forced air cooler | Robert Allen Johnson, Michael A. Branz | 1990-11-27 |