William J. Ketelhut

Director, Energy Conversion Devices.

Companies

SevconBoard member Jan 26, 2011 to Sep 29, 2017¹
Energy Conversion DevicesBoard member Jan 5, 2006 to Jan 13, 2012²

Sources

The numbers on this page point here. Each one links to the record it came from.

1
SEC EDGARSevcon, Board member
2
SEC EDGAREnergy Conversion Devices, Board member