Engel; Donald Francis
Patent Applications and Registrations
Patent applications and USPTO patent grants for Engel; Donald Francis.The latest application filed is for "air cleaner assembly; components; and, methods".
- Engel; Donald Francis - Prior Lake MN
| Patent | Date |
|---|---|
| Reverse flow air filter arrangement and method Grant 7,455,707 - Engel , et al. November 25, 2 | 2008-11-25 |
| Air cleaner assembly; components; and, methods App 20080066435 - Engel; Donald Francis ; et al. | 2008-03-20 |
| Air cleaner assembly; components; and, methods App 20080041026 - Engel; Donald Francis ; et al. | 2008-02-21 |
| [reverse Flow Air Filter Arrangement And Method] App 20040148913 - Engel, Donald Francis ; et al. | 2004-08-05 |
| Reverse flow air filter arrangement and method App 20040006955 - Engel, Donald Francis ; et al. | 2004-01-15 |
| Reverse flow air filter arrangement and method Grant 6,521,009 - Engel , et al. February 18, 2 | 2003-02-18 |
| Reverse flow air filter arrangement and method App 20020092282 - Engel, Donald Francis ; et al. | 2002-07-18 |
| Reverse flow air filter arrangement Grant 6,413,289 - Engel , et al. July 2, 2 | 2002-07-02 |
| Reverse flow air filter arrangement and method App 20020014058 - Engel, Donald Francis ; et al. | 2002-02-07 |
| Reverse flow air filter arrangement Grant 6,322,602 - Engel , et al. November 27, 2 | 2001-11-27 |
| Reverse flow air filter arrangement App 20010020419 - Engel, Donald Francis ; et al. | 2001-09-13 |
| Reverse flow air filter arrangement Grant 6,258,145 - Engel , et al. July 10, 2 | 2001-07-10 |
| Reverse flow air filter arrangement and method Grant 6,004,366 - Engel , et al. December 21, 1 | 1999-12-21 |
| Reverse flow air filter arrangement and method Grant 5,938,804 - Engel , et al. August 17, 1 | 1999-08-17 |
| Reverse flow air filter arrangement and method Grant 5,897,676 - Engel , et al. April 27, 1 | 1999-04-27 |
| Reverse flow air filter arrangement and method Grant 5,690,712 - Engel November 25, 1 | 1997-11-25 |
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