Granted Patent
Utility
US 5,678,593 · App. 08/590,765
Detergent mixing apparatus
Inventor:
Barton Lockhart
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Jan 24, 1996
Inventor
Barton Lockhart
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.