Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8654616 | Visual alert device | Richard T. Kessler | 2014-02-18 |
| 8077552 | Visual alert device | Richard T. Kessler | 2011-12-13 |
| 5803074 | Valve for resuscitator apparatus | — | 1998-09-08 |
| 5606131 | Piston manometer with spring constant dependent upon position | — | 1997-02-25 |