Granted Patent
Utility
US 6,036,785 · App. 08/850,272
Method for removing chemical residues from a surface
Inventor:
Gary W. Ferrell
Patented Case
View Patent ↗
Granted: Mar 14, 2000
Filed: May 2, 1997
Inventor
Gary W. Ferrell
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.