Granted Patent
Utility
US 5,227,770 · App. 07/650,547
Electronic boundary generation
Inventor:
Stephen Freeman
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: Feb 5, 1991
Inventor
Stephen Freeman
Assignee (at issue)
Crosfield 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.