Issued Patents 2018
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10112724 | Apparatus for preventing spark propagation | Michael E. Rorabaugh, Benjamin A. Johnson, Erik W. Dowell | 2018-10-30 |
| 9995418 | Bulkhead fitting assembly | David William Minteer, Benjamin A. Johnson, Erik W. Dowell | 2018-06-12 |
| 9989176 | Bulkhead fitting assembly and method of sealing a bulkhead opening | David William Minteer, Benjamin A. Johnson, Erik W. Dowell | 2018-06-05 |
| 9885434 | Bulkhead fitting assembly and method of making | David William Minteer, Benjamin A. Johnson, Erik W. Dowell | 2018-02-06 |