Granted Patent
Utility
US 4,598,173 · App. 06/660,591
Interface circuit for a subscriber line circuit
Inventors:
Ramon C. W. Chea, Jr., Kevin C. Keegan, Reddeppa N. Pothuri, Albert H. Lloyd, Jr.
Patented Case
View Patent ↗
Granted: Jul 1, 1986
Filed: Oct 15, 1984
Inventors
Ramon C. W. Chea, Jr.
Kevin C. Keegan
Reddeppa N. Pothuri
Albert H. Lloyd, Jr.
Assignee (at issue)
ITT Corporation
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.