Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4460965 | Device for the use of and easily carried by an individual | Karl B. Trehn | 1984-07-17 |
| 4310890 | Parking system | Karl B. Trehn | 1982-01-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4460965 | Device for the use of and easily carried by an individual | Karl B. Trehn | 1984-07-17 |
| 4310890 | Parking system | Karl B. Trehn | 1982-01-12 |