Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879490 | Gas discharge devices wherein electrons are injected into a high field region | — | 1989-11-07 |
| 4858237 | Electron beam apparatus | Arthur Maitland | 1989-08-15 |
| 4839554 | Apparatus for forming an electron beam sheet | Arthur Maitland, Ian A. Strudwick | 1989-06-13 |
| 4825446 | Laser apparatus having cathode bore directing electron beam onto anode | Arthur Maitland, Ian A. Strudwick | 1989-04-25 |