David F. Ellison

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Westport, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Fault interrupter using microcontroller for fault sensing and autom...
- Patent number 6,807,035
- Issue date Oct 19, 2004
- Hubbell Incorporated
- John Richard Baldwin
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Multiple optical designs for a multifunction sensor
- Patent number 6,324,008
- Issue date Nov 27, 2001
- Hubbell Incorporated
- John R. Baldwin
- G08 - SIGNALLING
Information Patent Grant
System for physically mounting a multifunction user interface to a...
- Patent number 6,285,912
- Issue date Sep 4, 2001
- Hubbell Incorporated
- David Ellison
- G08 - SIGNALLING
Information Patent Grant
Multifunction sensor and network sensor system
- Patent number 5,971,597
- Issue date Oct 26, 1999
- Hubbell Corporation
- John R. Baldwin
- G08 - SIGNALLING
Information Patent Grant
Multiple optical designs for a multifunction sensor
- Patent number 5,973,594
- Issue date Oct 26, 1999
- Hubbell Incorporated
- John R. Baldwin
- G08 - SIGNALLING
Information Patent Grant
Low profile passive infrared sensor
- Patent number D409936
- Issue date May 18, 1999
- Hubbell Incorporated
- John R. Baldwin
- D10 - Measuring, testing, or signalling instruments
Information Patent Grant
Multifunction occupancy sensor
- Patent number 5,764,146
- Issue date Jun 9, 1998
- Hubbell Incorporated
- John R. Baldwin
- G08 - SIGNALLING