Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D721827 | Roof panel | Gordon Spratt, John E. Lawson | 2015-01-27 |
| 6252863 | Multipath compensation for pseudorange signals | Stuart Riley | 2001-06-26 |
| 6243658 | Tilt prediction for total station | — | 2001-06-05 |
| 6138367 | Tilt prediction for total station | — | 2000-10-31 |
| 6119355 | Audible tilt sensor calibration | — | 2000-09-19 |
| 6031601 | Code-space optical electronic distance meter | Michael V. McCusker, James L. Sorden | 2000-02-29 |
| 6014109 | Offset-antenna total station | — | 2000-01-11 |
| 4184169 | Ink-drop print-head | Terrence F. E. Taylor, Vishwa N. Bansal | 1980-01-15 |