Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885477 | Differential amplifier and current sensing circuit including such an amplifier | Philip H. Bird | 1989-12-05 |
DA
Desmond R. Armstrong
Overall (1989): #121,171 of 140,708Top 90%
1
Patents 1989