Hemmann; Ronald S.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hemmann; Ronald S..The latest application filed is for "vacuum cleaner housing and airflow chamber".
- Hemmann; Ronald S. - Newington CT
| Patent | Date |
|---|---|
| Vacuum cleaner with extendable hose and brush disengagement Grant 5,388,303 - Hemmann , et al. February 14, 1 | 1995-02-14 |
| Vacuum cleaner housing and airflow chamber Grant 5,388,302 - Sundaram , et al. February 14, 1 | 1995-02-14 |
| Vacuum cleaner with extendable hose and brush disengagement Grant 5,331,716 - Hemmann , et al. July 26, 1 | 1994-07-26 |
| Doll or the like with motion sensing switch and switch therefor Grant 4,766,275 - Hemmann , et al. August 23, 1 | 1988-08-23 |
| Competitive manipulative skills game Grant 4,763,898 - Hemmann August 16, 1 | 1988-08-16 |
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