Granted Patent
Utility
US 4,949,376 · App. 07/366,498
Telephone network interface apparatus
Inventors:
Anthony L. Nieves, Thomas J. Collins
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Jun 15, 1989
Inventors
Anthony L. Nieves
Thomas J. Collins
Assignee (at issue)
Keptel, 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.