Granted Patent
Utility
US 5,890,250 · App. 08/790,464
Robotic washing apparatus
Inventors:
Michael R. Lange, Jeff Kerr
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: Jan 29, 1997
Inventors
Michael R. Lange
Jeff Kerr
Assignee (at issue)
Sky Robotics, 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.