Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4533852 | Method of manufacturing a thermionic cathode and thermionic cathode manufactured by means of said method | Georg Gartner, Hans Lydtin | 1985-08-06 |
BF
Berthold Frank
Overall (All Time): #4,019,502 of 4,157,543Top 100%
1
Patents All Time