Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D451289 | Filter material | — | 2001-12-04 |
| D440772 | Filter material | — | 2001-04-24 |
| 6143046 | Filter cartridge having vibratable diaphragm | Hans Wiegand | 2000-11-07 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D451289 | Filter material | — | 2001-12-04 |
| D440772 | Filter material | — | 2001-04-24 |
| 6143046 | Filter cartridge having vibratable diaphragm | Hans Wiegand | 2000-11-07 |