Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5348798 | Method of making a hollow core structural member | Albert H. Berghuis, Albert Drenth | 1994-09-20 |
| 4822098 | Double-walled structural body panel for motor vehicle | Hans Vogt, Malcom H. Russell, Derek F. Gentle | 1989-04-18 |