Granted Patent
Utility
US 6,186,129 · App. 09/365,568
Ion sense biasing circuit
Inventor:
Raymond O. Butler, Jr.
Patented Case
View Patent ↗
Granted: Feb 13, 2001
Filed: Aug 2, 1999
Inventor
Raymond O. Butler, Jr.
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.