Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864653 | Protective shield and visor supporting same | — | 1989-09-12 |
| 4852186 | Combined visor and protective shield | — | 1989-08-01 |
| 4850049 | Combined surgeon's cap, visor and protective shield | Charles V. Wirth | 1989-07-25 |