Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4583312 | Changeable sign board with magnetic characters | Edward C. King | 1986-04-22 |
| 4542603 | Display sign including changeable numeral characters | Bert E. Streeter | 1985-09-24 |
| 4507886 | Display sign | Bert E. Streeter, Mary M. Streeter | 1985-04-02 |
| 4507888 | Magnetic digital display sign | Edward C. King | 1985-04-02 |