| 7455707 |
Reverse flow air filter arrangement and method |
Dolan Bartels, John R. Hacker, Bruce Crenshaw, Donald F. Engel |
2008-11-25 |
| 6521009 |
Reverse flow air filter arrangement and method |
Donald F. Engel, Dolan Bartels, John R. Hacker, Bruce Crenshaw |
2003-02-18 |
| 6413289 |
Reverse flow air filter arrangement |
Donald F. Engel, Dolan Bartels, John R. Hacker, Bruce Crenshaw |
2002-07-02 |
| 6322602 |
Reverse flow air filter arrangement |
Donald F. Engel, Dolan Bartels, John R. Hacker, Bruce Crenshaw |
2001-11-27 |
| 6258145 |
Reverse flow air filter arrangement |
Donald F. Engel, Dolan Bartels, John R. Hacker, Bruce Crenshaw |
2001-07-10 |
| D425977 |
Inside surface of a filter element having insert construction |
Donald F. Engel, Dolan Bartels, John R. Hacker, Bruce Crenshaw |
2000-05-30 |
| 6004366 |
Reverse flow air filter arrangement and method |
Donald F. Engel, Dolan Bartels, John R. Hacker, Bruce Crenshaw |
1999-12-21 |
| 5938804 |
Reverse flow air filter arrangement and method |
Donald F. Engel, Dolan Bartels, John R. Hacker, Bruce Crenshaw, by Shirley A. Harold, legal representative |
1999-08-17 |
| 5897676 |
Reverse flow air filter arrangement and method |
Donald F. Engel, Dolan Bartels, John R. Hacker, Bruce Crenshaw |
1999-04-27 |