Granted Patent
Utility
US 4,687,541 · App. 06/909,804
Dual deposition single level lift-off process
Inventor:
James W. Penney
Patented Case
View Patent ↗
Granted: Aug 18, 1987
Filed: Sep 22, 1986
Inventor
James W. Penney
Assignee (at issue)
Rockwell International 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.