Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871979 | Variable frequency system having linear combination of charge pump and voltage controlled oscillator | Gerald W. Shearer, Karl M. J. Lofgren | 1989-10-03 |
| 4868482 | CMOS integrated circuit having precision resistor elements | Timothy G. O'Shaughnessy, Michael R. Spaur | 1989-09-19 |