Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687713 | Breathing mask | Erik W. Bahr, .O slashed.ystein Ljungmann, Nils Kvandal | 1997-11-18 |
| 5632357 | Combined stairs and person hoist | — | 1997-05-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687713 | Breathing mask | Erik W. Bahr, .O slashed.ystein Ljungmann, Nils Kvandal | 1997-11-18 |
| 5632357 | Combined stairs and person hoist | — | 1997-05-27 |