Andrews; Alexander Singer
Patent Applications and Registrations
Patent applications and USPTO patent grants for Andrews; Alexander Singer.The latest application filed is for "smoke detector with airflow barrier".
- Andrews; Alexander Singer - Clinton MA
| Patent | Date |
|---|---|
| Smoke detector with airflow barrier Grant 9,483,924 - Andrews , et al. November 1, 2 | 2016-11-01 |
| Smoke Detector with Airflow Barrier App 20150254954 - Andrews; Alexander Singer ; et al. | 2015-09-10 |
| Smoke detector with airflow barrier Grant 9,058,731 - Andrews , et al. June 16, 2 | 2015-06-16 |
| Smoke Detector with Airflow Barrier App 20150097679 - Andrews; Alexander Singer ; et al. | 2015-04-09 |
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