Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870795 | Ceramic wall or floor covering consisting of single tile-shaped elements | Martin Bard | 1989-10-03 |
| 4758540 | Method for the production of pencil leads and pencil leads produced by the method | Martin Bard | 1988-07-19 |