Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5880681 | Apparatus for determining the position of a work implement | George Codina, Thomas W. Herrick | 1999-03-09 |
| 4405990 | Apparatus for determining the ratio of two signal repetition rates | William Pickering | 1983-09-20 |
| 4370891 | Dual element-single oscillator-ratio type digital transducer | William Pickering | 1983-02-01 |