Granted Patent
Utility
US 4,480,183 · App. 06/358,823
Multi-plane optical membrane switch apparatus
Inventors:
Richard I. Ely, Wunnava V. Subbarao
Patented Case
View Patent ↗
Granted: Oct 30, 1984
Filed: Mar 16, 1982
Inventors
Richard I. Ely
Wunnava V. Subbarao
Assignee (at issue)
Burroughs, 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.