David E. Christian

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West Olive, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Connected monitoring system
- Patent number 11,423,761
- Issue date Aug 23, 2022
- Gentex Corporation
- David E. Christian
- G07 - CHECKING-DEVICES
Information Patent Grant
Nanofiber smoke detection calibration
- Patent number 10,962,493
- Issue date Mar 30, 2021
- Gentex Corporation
- David J. Cammenga
- G01 - MEASURING TESTING
Information Patent Grant
Supervised interconnect smoke alarm system and method of using same
- Patent number 9,607,494
- Issue date Mar 28, 2017
- Gentex Corporation
- Greg R. Pattok
- G08 - SIGNALLING

Patents Applicationslast 30 patents

Information Patent Application
CONNECTED MONITORING SYSTEM
- Publication number 20210125483
- Publication date Apr 29, 2021
- GENTEX CORPORATION
- David E. Christian
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
NANOFIBER SMOKE DETECTION CALIBRATION
- Publication number 20190323979
- Publication date Oct 24, 2019
- GENTEX CORPORATION
- David J. Cammenga
- G01 - MEASURING TESTING
Information Patent Application
SUPERVISED INTERCONNECT SMOKE ALARM SYSTEM AND METHOD OF USING SAME
- Publication number 20130285805
- Publication date Oct 31, 2013
- GENTEX CORPORATION
- Greg R. Pattok
- G08 - SIGNALLING