Granted Patent
Utility
US 5,604,617 · App. 08/294,551
Telecommunications switching element
Inventor:
Nigel John Burton
Patented Case
View Patent ↗
Granted: Feb 18, 1997
Filed: Aug 23, 1994
Inventor
Nigel John Burton
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.