Granted Patent
Utility
US 4,304,978 · App. 05/948,917
Heat treating using a laser
Inventor:
Richard J. Saunders
Patented Case
View Patent ↗
Granted: Dec 8, 1981
Filed: Oct 5, 1978
Inventor
Richard J. Saunders
Assignee (at issue)
Coherent, 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.