Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6883519 | Strap for a full respirator mask | Klaus Schmidtke, Wilfried Hoffmann | 2005-04-26 |
| 5531803 | Metal cover for respirator cartridge | Thomas M. Salapow, Roger P. Wolf, Thomas J. Scanio | 1996-07-02 |