Granted Patent
Utility
US 4,549,064 · App. 06/482,122
Laser treatment of silicon nitride
Inventor:
Michelangelo Delfino
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Apr 5, 1983
Inventor
Michelangelo Delfino
Assignee (at issue)
Fairchild Camera & Instrument Corp.
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.