Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883484 | Delivery device | Michael T. Shepherd | 1989-11-28 |
| 4867980 | Heavy density depot | Clifford Arthur Andrew Graham, Michael T. Shepherd | 1989-09-19 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883484 | Delivery device | Michael T. Shepherd | 1989-11-28 |
| 4867980 | Heavy density depot | Clifford Arthur Andrew Graham, Michael T. Shepherd | 1989-09-19 |