Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4250392 | Bi-focal collimator | John W. Leask, John C. Leask | 1981-02-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4250392 | Bi-focal collimator | John W. Leask, John C. Leask | 1981-02-10 |