Granted Patent
Utility
US 6,699,441 · App. 09/989,785
Ozone generating apparatus
Inventor:
Frank G. Martin
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: Nov 19, 2001
Inventor
Frank G. Martin
Assignee (at issue)
DEL INDUSTRIES 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.