| 6682683 |
Method for manufacturing an accordion filter insert |
Dieter Linse, Jorgen Knudsen |
2004-01-27 |
| 6582213 |
Tool for producing a filter cartridge |
— |
2003-06-24 |
| 6165403 |
Method for the manufacture of a filter cartridge |
Jorgen Knudsen |
2000-12-26 |
| 6162272 |
Accordion filter insert having an elastic sealing lip unitary with a frame of a filter element |
Dieter Linse, Jorgen Knudsen |
2000-12-19 |
| 6045600 |
Filter cartridge and a method for its manufacture |
Jorgen Knudsen |
2000-04-04 |
| 6010548 |
Spaced pocket filter assembly and method of manufacturing same |
Robert B. Burkhead, Klaus Schwobel |
2000-01-04 |
| 5958097 |
Filter insert |
Ulrich Schlor, Jorgen Knudsen |
1999-09-28 |
| 5863482 |
Method for manufacturing a filter insert |
Ulrich Schlor, Jorgen Knudsen |
1999-01-26 |
| 5695535 |
Pocket filter |
Dieter Hintenlang, Dieter Unrath, Margit Hofmann |
1997-12-09 |
| 5167740 |
Method of making a filter insert of nonwoven material in the form of a pleated pack |
Ulrich Schlor |
1992-12-01 |