Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4402186 | Stirling heating pump | Helmut E. Feustel | 1983-09-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4402186 | Stirling heating pump | Helmut E. Feustel | 1983-09-06 |