Granted Patent
Utility
US 5,327,421 · App. 07/972,786
Apparatus for interfacing between telecommunications call signals and broadband signals
Inventors:
Thomas L. Hiller, James J. Phelan, Meyer J. Zola
Patented Case
View Patent ↗
Granted: Jul 5, 1994
Filed: Nov 6, 1992
Inventors
Thomas L. Hiller
James J. Phelan
Meyer J. Zola
Assignee (at issue)
AT&T Bell Laboratories
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.