Granted Patent
Utility
US 5,485,966 · App. 08/237,455
Remotely controlled chopping machine for tank cleaning
Inventor:
Robert R. Cradeur
Patented Case
View Patent ↗
Granted: Jan 23, 1996
Filed: May 3, 1994
Inventor
Robert R. Cradeur
Assignee (at issue)
Servi-Tech, 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.