Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4520310 | Autofunction voltmeter | Austin T. Kelly, Alan H. Stolpen | 1985-05-28 |
| 4386308 | Hysteresis type battery charger having output short circuit protection | James Kroeger | 1983-05-31 |
| 4367467 | LCD Display mount window | — | 1983-01-04 |
| 4321530 | Multimeter with tone indication | Austin T. Kelly, Alan H. Stolpen | 1982-03-23 |
| 4303880 | Gated precision offset circuit for a digital meter having a dual slope analog-to-digital converter | Irwin Munt, John G. Walden | 1981-12-01 |