Granted Patent
Utility
US 5,280,581 · App. 07/843,873
Enhanced call-back authentication method and apparatus for remotely accessing a host computer from a plurality of remote sites
Inventors:
Erwin W. Bathrick, Kenneth Kung, Todd Matthews
Patented Case
View Patent ↗
Granted: Jan 18, 1994
Filed: Feb 27, 1992
Inventors
Erwin W. Bathrick
Kenneth Kung
Todd Matthews
Assignee (at issue)
Hughes Aircraft Company
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.