Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5757266 | Electronic apparatus for providing player performance feedback | Lester R. Querry, Stephen Landsman | 1998-05-26 |
| 5541516 | Locator equipment with self-integrity test capability | Lester R. Querry | 1996-07-30 |
| 5361029 | System for locating multiple concealed underground objects | Lester R. Querry | 1994-11-01 |
| 5264795 | System transmitting and receiving digital and analog information for use in locating concealed conductors | — | 1993-11-23 |
| 5231355 | Locator transmitter having an automatically tuned antenna | Lester R. Querry | 1993-07-27 |
| 5174033 | Angle sensor for a steerable boring tool | — | 1992-12-29 |
| 5133417 | Angle sensor using thermal conductivity for a steerable boring tool | — | 1992-07-28 |
| 4941172 | Preprogrammed autodialer and related process | Jacob J. Winebaum, Lester R. Querry | 1990-07-10 |