Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856494 | Solar heating installation with failure-protected heating medium hose | Janusz WÓJCIK, Rolf Hemminger | 1989-08-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856494 | Solar heating installation with failure-protected heating medium hose | Janusz WÓJCIK, Rolf Hemminger | 1989-08-15 |