Granted Patent
Utility
US 4,581,385 · App. 06/684,746
Carpet cleaning composition
Inventors:
James A. Smith, Betty J. Murphy
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Dec 20, 1984
Inventors
James A. Smith
Betty J. Murphy
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.