Top Inventors at Seismograph Service All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | William E. Lerwill | 2 |
| 2 | Chang Dae Han | 1 |
| 3 | Donald W. Moses | 1 |
| #4 | Vance Morrow | 1 |
| #5 | William D. Duwe | 1 |
| #6 | H. Bruce Stephens | 1 |
| #7 | Antoni Marjan Ziolkowski | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | William E. Lerwill | 2 |
| 2 | Chang Dae Han | 1 |
| 3 | Donald W. Moses | 1 |
| #4 | Vance Morrow | 1 |
| #5 | William D. Duwe | 1 |
| #6 | H. Bruce Stephens | 1 |
| #7 | Antoni Marjan Ziolkowski | 1 |