Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4783086 | Sealing ring with two rows of projections and for a rotary shaft | Johan C. M. Bras | 1988-11-08 |
| 4671519 | Lip sealing ring with tow rows of projections and for a rotary shaft | Johan C. M. Bras | 1987-06-09 |