David Crenshaw

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Tucson, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Power over ethernet emergency lighting system and method of detecti...
- Patent number 10,903,682
- Issue date Jan 26, 2021
- David Crenshaw
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power over ethernet exit signage
- Patent number 10,779,380
- Issue date Sep 15, 2020
- ABL IP Holding LLC
- David Crenshaw
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power over ethernet emergency lighting system and method of detecti...
- Patent number 10,361,583
- Issue date Jul 23, 2019
- Iota Engineering LLC
- David Crenshaw
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power over ethernet emergency lighting system
- Patent number 9,941,737
- Issue date Apr 10, 2018
- David Crenshaw
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power over Ethernet emergency lighting system and method of detecti...
- Patent number 9,609,706
- Issue date Mar 28, 2017
- Iota Engineering LLC
- David Crenshaw
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
POWER OVER ETHERNET EMERGENCY LIGHTING SYSTEM AND METHOD OF DETECTI...
- Publication number 20220236781
- Publication date Jul 28, 2022
- David Crenshaw
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
POWER OVER ETHERNET EMERGENCY LIGHTING SYSTEM AND METHOD OF DETECTI...
- Publication number 20190356162
- Publication date Nov 21, 2019
- ABL IP Holdings, LLC
- David Crenshaw
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER OVER ETHERNET EXIT SIGNAGE
- Publication number 20190297710
- Publication date Sep 26, 2019
- IOTA Engineering, LLC
- David Crenshaw
- F21 - LIGHTING
Information Patent Application
POWER OVER ETHERNET EMERGENCY LIGHTING SYSTEM AND METHOD OF DETECTI...
- Publication number 20180183264
- Publication date Jun 28, 2018
- IOTA ENGINEERING LLC
- David Crenshaw
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
POWER OVER ETHERNET EMERGENCY LIGHTING SYSTEM
- Publication number 20170271914
- Publication date Sep 21, 2017
- IOTA ENGINEERING LLC
- David Crenshaw
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER OVER ETHERNET EMERGENCY LIGHTING SYSTEM
- Publication number 20160273722
- Publication date Sep 22, 2016
- IOTA ENGINEERING LLC
- David Crenshaw
- F21 - LIGHTING