Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5547326 | Spring washer for the securing of screws, nuts, or the like | — | 1996-08-20 |
| 5112178 | Spring washer for securing screws, nuts or the like | Reiner Krolow | 1992-05-12 |
| 4710081 | Self-locking resilient or non-resilient element | — | 1987-12-01 |