Granted Patent
Utility
US 5,831,224 · App. 08/688,152
Noise reduction system for fluid cutting jets
Inventors:
Darren P. Wattles, Norman A. Rudy, Michael J. Wierman
Patented Case
View Patent ↗
Granted: Nov 3, 1998
Filed: Jul 29, 1996
Inventors
Darren P. Wattles
Norman A. Rudy
Michael J. Wierman
Assignee (at issue)
DESIGNS 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.