Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5522197 | Method in connection with a roof drainage apparatus and a roof drainage apparatus | — | 1996-06-04 |
| 5433192 | Breathing mask having a cellulose heat and moisture exchanger formed therein | — | 1995-07-18 |
| D309962 | Face mask for cold protection | — | 1990-08-14 |
| 4683685 | Draining arrangement for roof | Risto Lunden | 1987-08-04 |
| 4652365 | Waste screen | — | 1987-03-24 |
| 4492491 | Rain water roof outlet or similar for a building | Risto Lunden | 1985-01-08 |