Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647277 | Skip-scorer, skip-perforator apparatus for use with printing press systems | — | 1997-07-15 |
| 5133235 | Skip-scorer, skip perforator for use with printing press systems | — | 1992-07-28 |
| 5045045 | Skip-scorer, skip-perforator for use with printing press systems | Harold D. Davenport | 1991-09-03 |
| 4524962 | Pre-fold, web scoring apparatus for signature folding machines | Harold D. Davenport | 1985-06-25 |