Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887176 | Double-sided magnetic recording device supporting two transducers in fixed relation | Thomas E. Dussinger, Gerald J. Kosarko | 1989-12-12 |
JR
John M. Riley
Overall (1989): #93,246 of 140,708Top 70%
1
Patents 1989