Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5868931 | Primer system for filter assembly | Michael J. Williams | 1999-02-09 |
| 5837137 | Base/cartridge location and key system for fuel filter assembly | — | 1998-11-17 |
| 5794598 | Fuel circuit and circulation method for fuel injection system | Michael J. Williams | 1998-08-18 |
| 5766463 | Fuel filter cartridge | M. Craig Maxwell | 1998-06-16 |
| 5614091 | Fuel filter master module with optional diverter capability | M. Craig Maxwell, Robert W. Zeiner | 1997-03-25 |
| 5578221 | Fuel filter with improved hand primer | — | 1996-11-26 |
| 5525225 | Fuel filter with internal vent | Maxwell M. Craig | 1996-06-11 |
| 5489384 | Single stage fuel filter with seal control air purge | M. Craig Maxwell | 1996-02-06 |
| 5484527 | Module for filter assembly base | M. Craig Maxwell | 1996-01-16 |
| 5474676 | Filter base assembly | Robert W. Zeiner | 1995-12-12 |
| 5413711 | Fuel filter with internal vent | — | 1995-05-09 |
| D356852 | Fuel filter cartridge | M. Craig Maxwell | 1995-03-28 |
| 5312546 | Dry change fuel filter system | — | 1994-05-17 |
| 5271836 | Disposal plug for filter cartridge | M. Craig Maxwell, C. Eugene Brady | 1993-12-21 |
| 5236579 | Fuel filter assembly with modular drain bowl | Stephen Burgess | 1993-08-17 |
| 5203994 | Fuel filter retention system | — | 1993-04-20 |
| 5186829 | Fuel filter key system | — | 1993-02-16 |
| 5084170 | Fuel filter | M. Craig Maxwell | 1992-01-28 |
| 5035797 | Key system for filter assembly | — | 1991-07-30 |
| 5017285 | Fuel filter and cartridge assembly | M. Craig Maxwell | 1991-05-21 |
| 4976852 | Fuel filter | M. Craig Maxwell | 1990-12-11 |
| 4971528 | Lube oil pump with relief valve | David H. Hodgkins | 1990-11-20 |
| 4938193 | Fuel injection nozzle | Robert Raufeisen, David A. Chace | 1990-07-03 |
| 4894900 | Tool for removing a fuel injection nozzle | Robert Rausfeisen, David A. Chace | 1990-01-23 |
| 4876990 | Spray nozzle assembly for piston cooling | David H. Hodgkins | 1989-10-31 |