Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4509308 | Mounting assembly and method for installing dowels in compound panels | Karl Dettfurth | 1985-04-09 |
| 4341053 | Built-in connector element for sandwich type compound panels | Karl Dettfurth | 1982-07-27 |