Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6063715 | Reinforced ceramic fiber enclosure and method of making same | John H. Holbeck | 2000-05-16 |
| 4641233 | AC to DC converter with voltage regulation | — | 1987-02-03 |
| 4521722 | Appliance controller | Richard C. Barthel | 1985-06-04 |
| 4468600 | Appliance controller | Richard C. Barthel | 1984-08-28 |
| 4466040 | Safety device | Richard C. Barthel | 1984-08-14 |