Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5984047 | Erectable horizontal work surface apparatus | — | 1999-11-16 |
| 4644730 | Method and apparatus for folding articles on header cards | Duane B. Liescheidt | 1987-02-24 |
| 4545125 | Equal spacing positioning apparatus | Duane B. Liescheidt | 1985-10-08 |