Granted Patent
Utility
US 4,658,288 · App. 06/893,530
Beam index system with switchable memories
Inventors:
Richard W. Midland, Boris Rozansky
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Aug 6, 1986
Inventors
Richard W. Midland
Boris Rozansky
Assignee (at issue)
Zenith Electronics 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.