Granted Patent
Utility
US 5,385,402 · App. 08/294,495
Hazardous waste transportation and disposal
Inventor:
Robert M. Rumph
Patented Case
View Patent ↗
Granted: Jan 31, 1995
Filed: Aug 23, 1994
Inventor
Robert M. Rumph
Assignee (at issue)
Sumter Transport
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.