Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4348302 | Anticorrosive agent stable to hard water | Rainer Helwerth | 1982-09-07 |
HF
Horst Frohlich
Overall (1982): #58,063 of 81,411Top 75%
1
Patents 1982