Chidakel; David Welford
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chidakel; David Welford.The latest application filed is for "sonic building rescue beacon".
- Chidakel; David Welford - Wellesley MA
| Patent | Date |
|---|---|
| Sonic building rescue beacon Grant 7,839,290 - Chidakel , et al. November 23, 2 | 2010-11-23 |
| Sonic Building Rescue Beacon App 20080100458 - Chidakel; David Welford ; et al. | 2008-05-01 |
| Versatile Network of Building Alarm Modules App 20080055097 - Chidakel; David Welford ; et al. | 2008-03-06 |
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