Granted Patent
Utility
US 5,848,877 · App. 08/863,095
Water blasting system with improved pressure control and method
Inventors:
David W. Dill, Christopher C. Ginn, Karl E. Elliot, Michael J. Woodward
Patented Case
View Patent ↗
Granted: Dec 15, 1998
Filed: May 23, 1997
Inventors
David W. Dill
Christopher C. Ginn
Karl E. Elliot
Michael J. Woodward
Assignee (at issue)
Butterworth Jetting Systems, Inc.
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.