Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D305165 | Two way check respiratory valve | Kevin A. Rudolph | 1989-12-19 |
| D303586 | Three way Y-shaped respiratory valve | Kevin A. Rudolph | 1989-09-19 |
| D300272 | Three-way T-shaped respiratory valve with dual balloon | Kevin A. Rudolph | 1989-03-14 |
| D300270 | Four-way T-shaped respiratory valve | Kevin A. Rudolph | 1989-03-14 |
| D300274 | Four way respiratory valve | Kevin A. Rudolph | 1989-03-14 |
| D300273 | Four way respiratory valve with dual balloon | Kevin A. Rudolph | 1989-03-14 |
| D300271 | Three-way T-shaped respiratory valve with single balloon | Kevin A. Rudolph | 1989-03-14 |