Granted Patent
Utility
US 5,449,879 · App. 08/133,559
Laser beam delivery system for heat treating work surfaces
Inventors:
William E. Lawson, R. Olen Lund
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Oct 7, 1993
Inventors
William E. Lawson
R. Olen Lund
Assignee (at issue)
Laser Machining, 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.