Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6446049 | Method and apparatus for transmitting a digital information signal and vending system incorporating same | Joseph J. Janning, Robert G. Schumacher, II | 2002-09-03 |
| 6166643 | Method and apparatus for controlling the whereabouts of an animal | Joseph J. Janning | 2000-12-26 |
| 6064308 | RF signaling system and system for controlling the whereabouts of animals using same | Joseph J. Janning | 2000-05-16 |
| 5615227 | Transmitting spread spectrum data with commercial radio | Robert G. Schumacher, II | 1997-03-25 |
| 5338287 | Electromagnetic induction hearing aid device | Gale W. Miller, John L. Janning | 1994-08-16 |
| 5241923 | Transponder control of animal whereabouts | — | 1993-09-07 |
| 4206398 | Method of and apparatus for detecting ground faults in isolated power supply systems | — | 1980-06-03 |