Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D276797 | Section for a portable warning barricade | Frank D. Billeck | 1984-12-18 |
| 4314418 | Message control unit | Frank D. Billeck | 1982-02-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D276797 | Section for a portable warning barricade | Frank D. Billeck | 1984-12-18 |
| 4314418 | Message control unit | Frank D. Billeck | 1982-02-09 |