Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4813971 | Use of cyclic esters of sulfurous acid in the dyeing of polyamide textile materials | Sigismund Heimann, Michele Vescia, Hermann Sulz, Ingrid Steenken | 1989-03-21 |
AB
Attila Bereck
Overall (1989): #130,584 of 140,708Top 95%
1
Patents 1989