Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864329 | Fluid handling device with filter and fabrication process therefor | Gary A. Kneezel, Donald J. Drake | 1989-09-05 |
| 4851371 | Fabricating process for large array semiconductive devices | Donald J. Drake | 1989-07-25 |