Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4297252 | Aging-resistant fireproofing material | Arndt C. Caesar, Wolfram Koegel, Ludwig Zuern | 1981-10-27 |
FG
Friedheim Gaertner
Overall (All Time): #4,099,372 of 4,157,543Top 100%
1
Patents All Time