Granted Patent
Utility
US 5,993,563 · App. 09/073,042
Combination of main scrubbing machine and attachment scrubbing machine
Inventors:
Timothy A. Strickland, Richard C. Brigman, Robert J. O'Hara
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: May 5, 1998
Inventors
Timothy A. Strickland
Richard C. Brigman
Robert J. O'Hara
Assignee (at issue)
Windsor Industries, 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.