Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872465 | Light-weight disposable protective face shield | Louis Muller | 1989-10-10 |
| 4865812 | Integral specimen collection tube and microscope slide device | Louis Muller | 1989-09-12 |
| 4825878 | Light-weight disposable protective face shield | Louis Muller | 1989-05-02 |