Granted Patent
Utility
US 4,373,470 · App. 06/232,842
Mask positioning carriage assembly
Inventor:
Richard Martin
Patented Case
View Patent ↗
Granted: Feb 15, 1983
Filed: Feb 9, 1981
Inventor
Richard Martin
Assignee (at issue)
Applied Magnetics, LLC
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.