Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4995400 | Pneumotach and components therefor | John R. Boehringer, John Karpowicz | 1991-02-26 |
| 4807641 | Pneumotach and components therefore and combined pulmonary function measuring kit containing the same | John R. Boehringer, John Karpowicz | 1989-02-28 |