Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685296 | Flow regulating valve and method | Ronald J. Zdrojkowski, Frank V. Blazek | 1997-11-11 |
| 5647355 | Automatic safety valve for respiratory equipment which is counter-balanced and self-adjusting | John R. Starr, Eric W. Starr, William J. Kaigler, Patrick Devinney, Andrew Serowski | 1997-07-15 |