Granted Patent
Utility
US 4,991,188 · App. 07/282,547
Digital frequency divider
Inventor:
Luke A. Perkins
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: Dec 12, 1988
Inventor
Luke A. Perkins
Assignee (at issue)
NCR 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.