Granted Patent
Utility
US 5,013,691 · App. 07/386,650
Anisotropic deposition of silicon dioxide
Inventors:
Earl R. Lory, Leonard J. Olmer
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Jul 31, 1989
Inventors
Earl R. Lory
Leonard J. Olmer
Assignee (at issue)
AT&T Bell Laboratories
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.