Granted Patent
Utility
US 4,963,770 · App. 07/469,728
Programmable logic device
Inventor:
Hisaya Keida
Patented Case
View Patent ↗
Granted: Oct 16, 1990
Filed: Jan 24, 1990
Inventor
Hisaya Keida
Assignee (at issue)
Kawasaki Steel 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.