Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869238 | Endoscope for use with a disposable sheath | Fred E. Silverstein | 1989-09-26 |
| 4852551 | Contamination-free endoscope valves for use with a disposable endoscope sheath | Fred E. Silverstein | 1989-08-01 |
| 4825850 | Contamination protection system for endoscope control handles | Fred E. Silverstein | 1989-05-02 |