Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7629584 | System for measuring ionizing radiation | Dirk Mörmann, Ewald Freiburger | 2009-12-08 |
| 4470643 | Ball bearing and retainer therefor | George H. Schaefer | 1984-09-11 |
| 4410248 | Optical and focusing arrangement for microfiche reader | George H. Schaefer | 1983-10-18 |
| 4400068 | Microfiche reader carrier assembly | — | 1983-08-23 |