Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847445 | Zirconium thin-film metal conductor systems | Earl R. Helderman, Robert E. Holmes | 1989-07-11 |
RZ
Robert R. Zimmerman
Overall (1989): #60,297 of 140,708Top 45%
1
Patents 1989