Granted Patent
Utility
US 4,672,409 · App. 06/746,452
Nonvolatile semiconductor memory device
Inventors:
Akira Takei, Yoshihiko Hika, Takashi Miida
Patented Case
View Patent ↗
Granted: Jun 9, 1987
Filed: Jun 19, 1985
Inventors
Akira Takei
Yoshihiko Hika
Takashi Miida
Assignee (at issue)
Fujitsu Limited
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.