Granted Patent
Utility
US 6,621,225 · App. 09/793,303
Intelligent electrical switching devices
Inventor:
Frederick Johannes Bruwer
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: Feb 26, 2001
Inventor
Frederick Johannes Bruwer
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.