Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811724 | Air exhausting means | Erkki Aalto, Kaarlo J. Korhonen, Jorma Pekkinen, Arvi Tolmunen, Seppo Vartiainen +1 more | 1989-03-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811724 | Air exhausting means | Erkki Aalto, Kaarlo J. Korhonen, Jorma Pekkinen, Arvi Tolmunen, Seppo Vartiainen +1 more | 1989-03-14 |