Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820031 | Binocular periscope viewing device including triple prism for image splitting and elongate head column | Robert E. Wallace | 1989-04-11 |
| 4809942 | Quick release night vision goggle mounting bracket | Richard T. Hart, Wayne E. Isbell | 1989-03-07 |