Granted Patent
Utility
US 5,315,650 · App. 08/056,678
Caller identification transmit path limiter
Inventors:
Earl Leo Smith, III, Van Son Nguyen
Patented Case
View Patent ↗
Granted: May 24, 1994
Filed: May 3, 1993
Inventors
Earl Leo Smith, III
Van Son Nguyen
Assignee (at issue)
Teltrend, 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.