Granted Patent
Utility
US 6,423,674 · App. 09/464,606
Aqueous solution for maintaining floors
Inventors:
Todd A. Williams, Richard A. Williams
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Dec 15, 1999
Inventors
Todd A. Williams
Richard A. Williams
Assignee (at issue)
S. C. Johnson Commercial Markets, 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.