Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5336326 | Method of and apparatus for a direct voltage arc discharge enhanced reactive treatment of objects | Johann Karner | 1994-08-09 |
| 5310607 | Hard coating; a workpiece coated by such hard coating and a method of coating such workpiece by such hard coating | Hans Schulz | 1994-05-10 |