Granted Patent
Utility
US 4,253,907 · App. 06/024,805
Anisotropic plasma etching
Inventors:
Peter D. Parry, Leslie G. Jerde
Patented Case
View Patent ↗
Granted: Mar 3, 1981
Filed: Mar 28, 1979
Inventors
Peter D. Parry
Leslie G. Jerde
Assignee (at issue)
Western Electric Company, 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.