Zehr; Melvin A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Zehr; Melvin A..The latest application filed is for "stationary cone over tub".
- Zehr; Melvin A. - Caldwell ID
- Zehr; Melvin A. - Middleton ID
| Patent | Date |
|---|---|
| Stationary cone over tub Grant 6,962,300 - Zehr November 8, 2 | 2005-11-08 |
| Retractable rod screens Grant 6,786,439 - Zehr September 7, 2 | 2004-09-07 |
| Bearing shear block Grant 6,783,090 - Zehr August 31, 2 | 2004-08-31 |
| Bearing shear block App 20020056771 - Zehr, Melvin A. | 2002-05-16 |
| Retractable rod screens App 20020056773 - Zehr, Melvin A. | 2002-05-16 |
| Stationary cone over tub App 20020056775 - Zehr, Melvin A. | 2002-05-16 |
| Slotted hammermill hammer Grant 6,045,072 - Zehr April 4, 2 | 2000-04-04 |
| Transportable trommel assembly Grant 6,006,921 - Zehr December 28, 1 | 1999-12-28 |
| Cover rotating drum grinding machine Grant 5,720,440 - Bonner , et al. February 24, 1 | 1998-02-24 |
| Grinding apparatus Grant 4,997,135 - Zehr March 5, 1 | 1991-03-05 |
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