Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10871247 | Compression couplings | David Carl Wartluft | 2020-12-22 |
| 4568937 | Induction loop vehicle detector | — | 1986-02-04 |
| 4491841 | Self-adjusting inductive object-presence detector | — | 1985-01-01 |
| 4459561 | Phase-lock loop controlled object detector oscillator | Robert Charles Bromwich | 1984-07-10 |
| 4358749 | Object detection | — | 1982-11-09 |
| 4253071 | Phase modulator circuit | Michael J. Underhill | 1981-02-24 |
| 4184122 | Digital phase comparison apparatus | Michael J. Underhill | 1980-01-15 |