Granted Patent
Utility
US 5,635,989 · App. 08/600,576
Method and apparatus for sorting and searching a television program guide
Inventor:
Michael Rothmuller
Patented Case
View Patent ↗
Granted: Jun 3, 1997
Filed: Feb 13, 1996
Inventor
Michael Rothmuller
Assignee (at issue)
HUGHES ELECTRONICS LIMITED
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.