Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4901006 | Method and apparatus for AC signal comparison, calibration and measurement | Fred L. Katzmann | 1990-02-13 |
| 4733322 | AC-DC transfer standard overload protection circuit | Jerry Harper | 1988-03-22 |
| 4659910 | AC-DC transfer standard temperature sensor reversal error compensation circuit | Jerry Harper, Fred L. Katzmann | 1987-04-21 |