Granted Patent
Utility
US 4,889,439 · App. 07/149,805
Automatic page end feature for an electronic typewriter
Inventors:
Sherry Anderson Cook, Patrick J. Gerstle, David R. Smith, Kathryn R. Stilz
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Jan 29, 1988
Inventors
Sherry Anderson Cook
Patrick J. Gerstle
David R. Smith
Kathryn R. Stilz
Assignee (at issue)
International Business Machines 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.