Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4547894 | Replaceable battery pack for intra-oral larynx | Craig A. Castle | 1985-10-15 |
| 4502151 | Replaceable saliva barrier for intra-oral larynx | Craig A. Castle, Theodore H. Toch | 1985-02-26 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4547894 | Replaceable battery pack for intra-oral larynx | Craig A. Castle | 1985-10-15 |
| 4502151 | Replaceable saliva barrier for intra-oral larynx | Craig A. Castle, Theodore H. Toch | 1985-02-26 |