Granted Patent
Utility
US 5,255,228 · App. 07/917,674
Semiconductor memory device with redundancy circuits
Inventors:
Minoru Hatta, Junko Hatta
Patented Case
View Patent ↗
Granted: Oct 19, 1993
Filed: Jul 22, 1992
Inventors
Minoru Hatta
Junko Hatta
Assignee (at issue)
Matsushita Electronics Corporation
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.