Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4562023 | Process and apparatus for producing a synthetic resin sheet having a colored band of varying color intensity | Hans Brinkmann | 1985-12-31 |
| 4476075 | Process and apparatus for the production of sheeting having a color wedge | Hans Brinkmann | 1984-10-09 |