Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4615351 | Method of and apparatus for monitoring the surface level of material in a vessel | Heinrich Schliefer, Rolf Christ | 1986-10-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4615351 | Method of and apparatus for monitoring the surface level of material in a vessel | Heinrich Schliefer, Rolf Christ | 1986-10-07 |