Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4905665 | Device for converting solar energy into process heat | Michael Geyer, Horst Kalfa | 1990-03-06 |
| 4877013 | Hot blast stove installation | Friedrich Eschmann | 1989-10-31 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4905665 | Device for converting solar energy into process heat | Michael Geyer, Horst Kalfa | 1990-03-06 |
| 4877013 | Hot blast stove installation | Friedrich Eschmann | 1989-10-31 |