Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847502 | Dual cathode system for electron beam instruments | Joseph M. Conley, David B. Wittry | 1989-07-11 |
JB
James G. Bradley
Overall (1989): #101,376 of 140,708Top 75%
1
Patents 1989