Granted Patent
Utility
US 6,492,819 · App. 09/759,568
High voltage switch and switching process for impulse measurement
Inventor:
Nagi Hilal
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Jan 12, 2001
Inventor
Nagi Hilal
Assignee (at issue)
ABB AG
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.