Granted Patent
Utility
US 5,760,363 · App. 08/707,227
Apparatus and method for starting and stopping a plasma arc torch used for mechanized cutting and marking applications
Inventors:
Elizabeth B. Hackett, Timothy M. Brewer, Zhipeng Lu, Richard W. Couch, Jr.
Patented Case
View Patent ↗
Granted: Jun 2, 1998
Filed: Sep 3, 1996
Inventors
Elizabeth B. Hackett
Timothy M. Brewer
Zhipeng Lu
Richard W. Couch, Jr.
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.