Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6459483 | Level with angle and distance measurement apparatus | David C. Shafer, Andrew G. Butler | 2002-10-01 |
| 6388609 | Radar devices for low power applications and bathroom fixtures | Andrew J. Paese, Steven M. Tervo, Carter J. Thomas, David C. Shafer, Fred Judson Heinzmann | 2002-05-14 |