Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4977945 | Full mold comprised of a plastic foam material | Fridolin Bissinger, Erich Krzyzanowski | 1990-12-18 |
| 4877078 | Pattern for use in lost pattern foundry process | — | 1989-10-31 |