Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864098 | High powered beam dump | Robert E. Basanese, Dale E. Koop | 1989-09-05 |
| 4820031 | Binocular periscope viewing device including triple prism for image splitting and elongate head column | William A. Kastendieck | 1989-04-11 |