Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5323774 | Breathing mask with an indicator signalling penetration of a toxic substance into the mask | — | 1994-06-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5323774 | Breathing mask with an indicator signalling penetration of a toxic substance into the mask | — | 1994-06-28 |