Granted Patent
Utility
US 4,758,880 · App. 07/032,140
Video matte generator
Inventor:
Grant T. McFetridge
Patented Case
View Patent ↗
Granted: Jul 19, 1988
Filed: Mar 27, 1987
Inventor
Grant T. McFetridge
Assignee (at issue)
GRASS VALLEY 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.