Granted Patent
Utility
US 5,841,095 · App. 08/736,707
Apparatus and method for improved assembly concentricity in a plasma arc torch
Inventors:
Zhipeng Lu, Richard W. Couch, Jr., Jennifer Freeman
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Oct 28, 1996
Inventors
Zhipeng Lu
Richard W. Couch, Jr.
Jennifer Freeman
Assignee (at issue)
Hypertherm, 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.