Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5704403 | Device for refilling a printer cartridge of an ink jet printer | Peter Schwenk, Hans-Juergen Harp | 1998-01-06 |
| 5495877 | Device, kit, and process for filling of a print cartridge of an ink jet printer | Peter Schwenk | 1996-03-05 |