Granted Patent
Utility
US 5,851,139 · App. 08/794,815
Cutting head for a water jet cutting assembly
Inventor:
Jian Xu
Patented Case
View Patent ↗
Granted: Dec 22, 1998
Filed: Feb 4, 1997
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.