Granted Patent
Utility
US 6,131,240 · App. 09/250,778
Carpet cleaner
Inventors:
Eric L. Shark, Gene Bothun, Clay Costanzo
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Feb 12, 1999
Inventors
Eric L. Shark
Gene Bothun
Clay Costanzo
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.