Granted Patent
Utility
US 6,220,529 · App. 09/501,637
Dual pressure valve arrangement for waterjet cutting system
Inventor:
Jian Xu
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Feb 10, 2000
Inventor
Jian Xu
Assignee (at issue)
Jet Edge Division TC/American Monorail, 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.