Granted Patent
Utility
US 4,742,490 · App. 06/811,932
Integrated semiconductor memory
Inventor:
Kurt Hoffmann
Patented Case
View Patent ↗
Granted: May 3, 1988
Filed: Dec 20, 1985
Inventor
Kurt Hoffmann
Assignee (at issue)
Siemens Aktiengesellschaft
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.