Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5135592 | Ultrasonically welded hydrogel ophthalmic lens | — | 1992-08-04 |
| 4790306 | Respiratory mask having a rigid or semi-rigid, insert-molded filtration element and method of making | David L. Braun | 1988-12-13 |