Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE34587 | Interactive computerized communications systems with voice input and output | Michael B. Crane | 1994-04-19 |
| 4866756 | Interactive computerized communications systems with voice input and output | Michael B. Crane | 1989-09-12 |
| D270274 | Rotary sprinkler | David M. Rau, III | 1983-08-23 |