Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4592376 | Hair dye applicating apparatus | Franz Steigerwald, Karlheinz Zulauf | 1986-06-03 |
| 4308977 | Dispensing device with one-hand operation for pasty substances | Norbert Golzer, Franz Steigerwald | 1982-01-05 |