Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10504678 | Remote access pull rig | Richard G. Smith | 2019-12-10 |
| 8681462 | Circuit testing closer apparatus and method with in-rush current awareness | Raymond P. O'Leary, Alejandro Montenegro, John C. Opfer | 2014-03-25 |
| 7626397 | High current capable circuit testing closer apparatus and method | John C. Opfer, Albert B. Tucker, Jr., Alejandro Montenegro, Raymond P. O'Leary | 2009-12-01 |
| 7352265 | Manual trip control method and arrangement for multiple circuit interrupters | John C. Opfer | 2008-04-01 |