Granted Patent
Utility
US 4,800,379 · App. 07/044,264
Image display with movable magnification
Inventor:
Andrew James Victor Yeomans
Patented Case
View Patent ↗
Granted: Jan 24, 1989
Filed: Apr 30, 1987
Inventor
Andrew James Victor Yeomans
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.