Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4372897 | Dual sheet capillary heat exchanger | Richard B. Sumner, Loren G. Kragh | 1983-02-08 |
| 4299786 | Waste heat disposal process | Richard B. Sumner, Loren G. Kragh | 1981-11-10 |