Granted Patent
Utility
US 6,153,850 · App. 09/301,777
Method of cutting a workpiece along an arcuate path with a plasma arc torch
Inventors:
Joseph V. Warren, Jr., Barry Turner
Patented Case
View Patent ↗
Granted: Nov 28, 2000
Filed: Apr 29, 1999
Inventors
Joseph V. Warren, Jr.
Barry Turner
Assignee (at issue)
THE ESAB GROUP 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.