Granted Patent
Utility
US 5,525,009 · App. 08/384,584
Synthetic bulk material cover and method of using the same
Inventor:
David L. Hansen
Patented Case
View Patent ↗
Granted: Jun 11, 1996
Filed: Jan 23, 1995
Inventor
David L. Hansen
Assignee (at issue)
Landfill Service Corporation
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.