Granted Patent
Utility
US 4,975,828 · App. 07/084,717
Multi-channel data communications controller
Inventors:
John A. Wishneusky, Cecil H. Kaplinsky, Anthony J. P. O'Toole, Shahin Hedayat, Shrikant Acharya
Patented Case
View Patent ↗
Granted: Dec 4, 1990
Filed: Aug 5, 1987
Inventors
John A. Wishneusky
Cecil H. Kaplinsky
Anthony J. P. O'Toole
Shahin Hedayat
Shrikant Acharya
Assignee (at issue)
Cirrus Logic Inc.
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.