Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811193 | Variable frequency controller | John D. Gotal | 1989-03-07 |
| 4619356 | Programmable parts feeder | Arthur L. Dean, William R. Brown, James P. Martin, Stanley P. Turcheck, Jr., John D. Gotal | 1986-10-28 |
| 4554490 | Variable-frequency dual-motion feeder control using a single phase power source | — | 1985-11-19 |
| 4547712 | Subharmonic controller for electromagnetic exciter | John D. Gotal | 1985-10-15 |
| 4517500 | Controller for electromagnetic exciter using power line subharmonic | John D. Gotal | 1985-05-14 |