Patents per Year
Top Inventors at Gradco Systems All Time
Showing 1–7 of 7 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Frederick J. Lawrence | 5 |
| 2 | R. Clark DuBois | 3 |
| 3 | Peter M. Coombs | 2 |
| #4 | George M. Cron | 1 |
| #4 | Hans Graafmans | 1 |
| #4 | John C. Hamma | 1 |
| #4 | Klaus Thogersen | 1 |
Most Valuable Patents
| Patent | Est. Value | Year |
|---|---|---|
| Sheet sorting machine | $774K | 1990 |
| Sheet receiver | $630K | 1987 |
| Decurling and offsetting device | $436K | 1990 |
| Decurler | $410K | 1991 |
| Random access sheet receiver | $397K | 1989 |