Bitzel; Michael E.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Bitzel; Michael E..The latest application filed is for "tool-free collet tightener".
- Bitzel; Michael E. - Reisterstown MD
- Bitzel; Michael E. - Monroe CT
- Bitzel; Michael E. - Stevensville MD
| Patent | Date |
|---|---|
| Tool-free collet tightener Grant 6,648,567 - Berry , et al. November 18, 2 | 2003-11-18 |
| Tool-free collet tightener App 20020090274 - Berry, Robert Alan ; et al. | 2002-07-11 |
| Tool-free collet tightener Grant 6,350,087 - Berry , et al. February 26, 2 | 2002-02-26 |
| Hand-held vacuum cleaner with power brush Grant 4,928,346 - Elson , et al. May 29, 1 | 1990-05-29 |
| Electrical power circuit for a vacuum cleaner Grant 4,920,606 - Gerke, Jr. , et al. May 1, 1 | 1990-05-01 |
| Dual-purpose rotating brush for vacuum cleaner Grant 4,912,805 - Krasznai , et al. April 3, 1 | 1990-04-03 |
| Cordless vacuum cleaner with power brush Grant 4,841,594 - Elson , et al. June 27, 1 | 1989-06-27 |
| Mounting of semiconductor sensing means for an electromagnetic tachometer in a portable electric tool Grant 4,385,276 - Bitzel May 24, 1 | 1983-05-24 |
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