DK

David J. Keyes

General Motors: 1 patents #609 of 1,582Top 40%
🗺 New York: #3,659 of 10,473 inventorsTop 35%
Overall (2011): #322,517 of 364,097Top 90%
1
Patents 2011

Issued Patents 2011

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7862943 Method and apparatus for starting a fuel cell engine in a vehicle equipped with an ultracapacitor Matthew K. Hortop, Ellen Greifenstein, Kazuyuki Izawa, Kengo Ikeya 2011-01-04