Granted Patent
Utility
US 4,332,999 · App. 06/195,645
Method for machining a workpiece with a beam of radiant energy assisted by a chemically-reactive gas
Inventor:
James P. Wittke
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: Oct 9, 1980
Inventor
James P. Wittke
Assignee (at issue)
RCA Corporation
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.