Granted Patent
Utility
US 6,570,903 · App. 09/791,866
Electric-optical singlet sigma and singlet delta oxygen generator
Inventor:
David Kurt Neumann
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Feb 26, 2001
Inventor
David Kurt Neumann
Assignee (at issue)
Neumann Information Systems, Inc.
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.