Granted Patent
Utility
US 4,590,468 · App. 06/474,135
Token access controller protocol and architecture
Inventor:
Mark Stieglitz
Patented Case
View Patent ↗
Granted: May 20, 1986
Filed: Mar 10, 1983
Inventor
Mark Stieglitz
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.