Granted Patent
Utility
US 4,649,474 · App. 06/535,374
Chip topography for a MOS disk memory controller circuit
Inventors:
William H. Ambrosius, III, Larry D. Rossean
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Sep 23, 1983
Inventors
William H. Ambrosius, III
Larry D. Rossean
Assignee (at issue)
Western Digital
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.