Granted Patent
Utility
US 4,748,618 · App. 06/865,871
Telecommunications interface
Inventors:
Earl F. Brown, Robert Kline
Patented Case
View Patent ↗
Granted: May 31, 1988
Filed: May 21, 1986
Inventors
Earl F. Brown
Robert Kline
Assignee (at issue)
Bell Communications Research, 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.