Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700303 | Chrome polish/exhaust pipe de-bluer | Jeffrey S. McKenzie | 1997-12-23 |
| 5697993 | Hard water stain remover for glass | Jeffrey S. McKenzie | 1997-12-16 |
| 5225641 | Fluid flow switch assembly | Rodney C. Weld | 1993-07-06 |
| 5142965 | Master cylinder piston retainer | — | 1992-09-01 |
| 5136847 | Cap for a reservoir of a master cylinder | Donald A. Crumb | 1992-08-11 |
| 5046313 | Master cylinder with fluid level and pressure failure detection | Donald A. Crumb, William F. Dillon, Jr., Robert F. Gaiser | 1991-09-10 |
| 5016442 | Master cylinder with fluid level and pressure failure detector | Robert F. Gaiser, Donald A. Crumb | 1991-05-21 |
| 4995676 | Positioning ring for a hydraulically operated warning device | Donald A. Crumb, Robert F. Gaiser | 1991-02-26 |
| 4929033 | Primary and secondary pressure-balanced proportioning valve | Robert F. Gaiser, William F. Dillon, Jr., Donald A. Crumb | 1990-05-29 |
| 4903387 | Method for making a proportioning valve having a unitary poppet valve assembly | John E. Steer, Donald A. Crumb | 1990-02-27 |
| 4785847 | Unitary poppet valve assembly for a proportioning valve | John E. Steer, Donald A. Crumb | 1988-11-22 |
| 4503677 | Master cylinder | Donald A. Crumb | 1985-03-12 |
| 4311039 | Disc centrifuge photosedimentometer | Mark E. Koehler, Theodore Provder | 1982-01-19 |