Granted Patent
Utility
US 4,580,245 · App. 06/518,166
Complementary metal oxide semiconductor dual port random access memory cell
Inventors:
Daniel Ziegler, Donald F. Fier
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Jul 28, 1983
Inventors
Daniel Ziegler
Donald F. Fier
Assignee (at issue)
Sperry Corp.
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.