Elson; Donald E.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Elson; Donald E..The latest application filed is for "hand-held vacuum cleaner with power brush".
- Elson; Donald E. - Baltimore MD
| Patent | Date |
|---|---|
| Hand-held vacuum cleaner with power brush Grant 4,928,346 - Elson , et al. May 29, 1 | 1990-05-29 |
| Cordless vacuum cleaner with power brush Grant 4,841,594 - Elson , et al. June 27, 1 | 1989-06-27 |
| Corded/cordless dual-mode power-operated device Grant 4,835,409 - Bhagwat , et al. May 30, 1 | 1989-05-30 |
| Dual-mode corded/cordless system for power-operated devices Grant 4,835,410 - Bhagwat , et al. May 30, 1 | 1989-05-30 |
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