Patents per Year
Top Inventors at Rubber Millers All Time
Showing 1–6 of 6 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | John T. Day | 7 |
| 2 | Robert B. McNatt | 3 |
| 3 | Robert O. Herder | 2 |
| #4 | Boris L. Krayterman, deceased | 1 |
| #4 | Edward B. Magrab | 1 |
| #4 | Eugene F. Kane | 1 |
Most Valuable Patents
| Patent | Est. Value | Year |
|---|---|---|
| Composite feeder belt | $6M | 1980 |