Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5797600 | Multiple ball feed unit for pinball machine | Joseph E. Kaminkow | 1998-08-25 |
| 5364096 | Multiple ball feed unit for pinball machine | Joseph E. Kamikow | 1994-11-15 |
| 5358244 | Pinball machine with movable ball retrieval target assembly | Joseph E. Kaminkow | 1994-10-25 |
| 5092597 | Solid-state flipper control circuit | Joseph E. Kaminkow, Nicholas B. Wade | 1992-03-03 |
| 5002279 | Multi-level playing surface pinball machine apparatus | Joseph E. Kaminkow, John L. Lund | 1991-03-26 |
| 4968031 | Pinball machine with ball-launching ramps | Joseph E. Kaminkow, John L. Lund | 1990-11-06 |
| 4934699 | Pinball machine with gate-ramp | Joseph E. Kaminkow | 1990-06-19 |