Harwath; Frank L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Harwath; Frank L..The latest application filed is for "two-stage gear pump with improved spur gear mounting".
- Harwath; Frank L. - Rockford IL
| Patent | Date |
|---|---|
| Two-stage gear pump with improved spur gear mounting Grant 4,958,997 - Harwath September 25, 1 | 1990-09-25 |
| Gear pump with ring-type shaft retainer Grant 4,898,523 - Harwath February 6, 1 | 1990-02-06 |
| Diaphragm-actuated valve for a gear pump Grant 4,858,884 - Harwath August 22, 1 | 1989-08-22 |
| Gear pump with improved pinion mounting Grant 4,728,271 - Harwath March 1, 1 | 1988-03-01 |
| Gear pump with means for preventing shaft lock-up Grant 4,685,871 - Harwath August 11, 1 | 1987-08-11 |
| Fuel supply system for a recirculating fuel burner Grant 4,490,105 - Hunsberger , et al. December 25, 1 | 1984-12-25 |
| Arrangement for mounting a gear on a shaft Grant 4,171,939 - Harwath October 23, 1 | 1979-10-23 |
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