Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814856 | Integral transducer structures employing high conductivity surface features | Anthony D. Kurtz, Timothy A. Nunn | 1989-03-21 |
| 4808220 | Process for the preparation of refined ferromanganese | Hans Litterscheidt, Manfred Rahder, Carl-Heinz Schutz | 1989-02-28 |