Granted Patent
Utility
US 4,549,263 · App. 06/679,610
Device interface controller for input/output controller
Inventor:
Powell L. Calder
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Dec 7, 1984
Inventor
Powell L. Calder
Assignee (at issue)
Texas Instruments Incorporated
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.