Granted Patent
Utility
US 4,951,144 · App. 07/337,230
Recursive video blur effect
Inventor:
PHILIP A. DES JARDINS
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Apr 12, 1989
Inventor
PHILIP A. DES JARDINS
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.