Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859459 | Method of shaping human hair using dipropylene glycol monomethyl ether | Peter Hartmann, Joachim Köhler | 1989-08-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859459 | Method of shaping human hair using dipropylene glycol monomethyl ether | Peter Hartmann, Joachim Köhler | 1989-08-22 |