Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822392 | Apparatus for producing fibres from silicate raw materials such as basalt by blast drawing | Klaus Sistermann, Heinz-Jurgen Ungerer | 1989-04-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822392 | Apparatus for producing fibres from silicate raw materials such as basalt by blast drawing | Klaus Sistermann, Heinz-Jurgen Ungerer | 1989-04-18 |