Leventhall; Hubert Geoffrey
Patent Applications and Registrations
Patent applications and USPTO patent grants for Leventhall; Hubert Geoffrey.The latest application filed is for "sounder for mobile apparatus".
- Leventhall; Hubert Geoffrey - Ashtead N/A GB
- Leventhall; Hubert Geoffrey - London GB2
| Patent | Date |
|---|---|
| Sounder for mobile apparatus Grant 9,445,171 - Hanson-Abbott , et al. September 13, 2 | 2016-09-13 |
| Sounder For Mobile Apparatus App 20130156244 - Hanson-Abbott; Christopher ; et al. | 2013-06-20 |
| Attenuation of sound waves in ducts Grant 4,109,108 - Coxon , et al. August 22, 1 | 1978-08-22 |
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