Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859174 | Device for igniting combustible materials | Conrad Zellweger | 1989-08-22 |
| 4658871 | Valve for filling a gas container | Conrad Zellweger | 1987-04-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859174 | Device for igniting combustible materials | Conrad Zellweger | 1989-08-22 |
| 4658871 | Valve for filling a gas container | Conrad Zellweger | 1987-04-21 |