Granted Patent
Utility
US 5,287,513 · App. 07/848,382
Multiplex data ring transmission
Inventor:
Stephen P. Ferguson
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Mar 9, 1992
Inventor
Stephen P. Ferguson
Assignee (at issue)
GPT Limited
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.