Granted Patent
Utility
US 5,572,957 · App. 08/392,652
Automated sludge lance
Inventor:
James P. Vandenberg
Patented Case
View Patent ↗
Granted: Nov 12, 1996
Filed: Feb 23, 1995
Inventor
James P. Vandenberg
Assignee (at issue)
The Babcock & Wilcox Company
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.