Granted Patent
Utility
US 5,286,302 · App. 07/878,177
Method for cleaning intermediate bulk containers on a mobile vehicle
Inventor:
Ward E. Wickham, III
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: May 4, 1992
Inventor
Ward E. Wickham, III
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.