Granted Patent
Utility
US 5,406,522 · App. 08/011,279
Dynamic random access memory device and inspection method thereof
Inventor:
Hiroshige Hirano
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Jan 29, 1993
Inventor
Hiroshige Hirano
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.