Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5348798 | Method of making a hollow core structural member | Albert H. Berghuis, Albert Drenth | 1994-09-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5348798 | Method of making a hollow core structural member | Albert H. Berghuis, Albert Drenth | 1994-09-20 |