Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4277588 | Preparation of acetylene copolymers | Herbert Naarmann, Klaus Penzien, Albrecht Eckell | 1981-07-07 |
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Helmut Doerfel
Overall (All Time): #4,092,820 of 4,157,543Top 100%
1
Patents All Time