Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875899 | Filter system with an incorporated gas escape opening, intended to be fitted in artificial anus drainage bags during their manufacture | — | 1989-10-24 |
| 4846798 | Two piece ostomy connection device | Claude Hamelin | 1989-07-11 |
| 4834730 | Closure clamp for body waste collecting bag | Claude Hamelin | 1989-05-30 |