Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6216928 | Vehicle article carrier with movable cross rail operable from either side of vehicle | Karl Blankenburg, Henry Buhlinger | 2001-04-17 |
| 5715980 | Vehicle article carrier with movable cross rail operable from one side of vehicle | Karl Blankenburg, Henry Buhlinger | 1998-02-10 |
| 5116053 | Puzzle | Karl Blankenburg | 1992-05-26 |