Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D304758 | Fragrance cartridge | Jorg Ratzlaff | 1989-11-21 |
| 4819353 | Illuminated picture frame | Paul K. Cohen, Jorg Ratzlaff | 1989-04-11 |
| 4818344 | Water distilling apparatus | — | 1989-04-04 |
| 4804821 | Aroma diffuser assembly | — | 1989-02-14 |
| 4795883 | Aroma generating apparatus and driver circuit | Constantine D. Pezaris | 1989-01-03 |