Granted Patent
Utility
US 6,413,036 · App. 09/747,048
Waste concrete container
Inventor:
Richard J. Welton
Patented Case
View Patent ↗
Granted: Jul 2, 2002
Filed: Dec 21, 2000
Inventor
Richard J. Welton
Assignee (at issue)
TXI Operations, LP
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.