Granted Patent
Utility
US 4,404,557 · App. 06/355,021
Timed token ring with multiple priorities
Inventor:
Robert M. Grow
Patented Case
View Patent ↗
Granted: Sep 13, 1983
Filed: Mar 5, 1982
Inventor
Robert M. Grow
Assignee (at issue)
Burroughs, 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.