Granted Patent
Utility
US 4,380,803 · App. 06/233,066
Read-only/read-write memory
Inventor:
Hsing Tuan
Patented Case
View Patent ↗
Granted: Apr 19, 1983
Filed: Feb 10, 1981
Inventor
Hsing Tuan
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.