Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5981287 | Method for the investigation of house dust | Ralf Sauer, Heike Poch, Wolfgang Volker | 1999-11-09 |
| 4187866 | Comb with rotatable teeth | Jan M. Zwiren, Selma M. Casper | 1980-02-12 |