Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975241 | Wear-reduction-sleeve for thimbles | Karl Heinz Haslinger, Douglas S. Porter, Michael L. Martin | 1990-12-04 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975241 | Wear-reduction-sleeve for thimbles | Karl Heinz Haslinger, Douglas S. Porter, Michael L. Martin | 1990-12-04 |