Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | William E. Adams | Adams Mfg. | 8 |
| 2 | Jerry Hodak | Unknown | 1 |
| 2 | Michael J. Duer | Red Valve Company | 1 |
| 2 | Mark F. Zanella, Sr. | Msa Technology | 1 |
| 2 | James E. Hulings | Billco Manufacturing Incorporated | 1 |
| 2 | Joseph A. Corella, II | Mine Safety Appliances Company | 1 |
| 2 | Michelle L. Robinson | Medrad | 1 |
Part of Pennsylvania