Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4340077 | Method of and apparatus for remotely controlling orifice-opening and orifice-closing operations | Ernst Heinrichs, Manfred Helten | 1982-07-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4340077 | Method of and apparatus for remotely controlling orifice-opening and orifice-closing operations | Ernst Heinrichs, Manfred Helten | 1982-07-20 |