Granted Patent
Utility
US 6,668,632 · App. 10/213,636
Spark apparatus with pressure signal response amplification
Inventors:
Dean M. Ford, Diane Hageman, Ronald J. Kiess, Robert A. Noel
Patented Case
View Patent ↗
Granted: Dec 30, 2003
Filed: Aug 6, 2002
Inventors
Dean M. Ford
Diane Hageman
Ronald J. Kiess
Robert A. Noel
Assignee (at issue)
Delphi Technologies
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.