Granted Patent
Utility
US 5,909,741 · App. 08/879,576
Chemical bath apparatus
Inventor:
Gary W. Ferrell
Patented Case
View Patent ↗
Granted: Jun 8, 1999
Filed: Jun 20, 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.