Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795170 | Packing arrangement for sealing the surface of a rotary drum like object | Seppo K. Kokkonen, Erkki A. Ruuskanen | 1989-01-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795170 | Packing arrangement for sealing the surface of a rotary drum like object | Seppo K. Kokkonen, Erkki A. Ruuskanen | 1989-01-03 |