Granted Patent
Utility
US 6,421,095 · App. 09/364,554
Key priority for a mix/effect bank having multiple keyers
Inventor:
Kevin D. Windrem
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Jul 29, 1999
Inventor
Kevin D. Windrem
Assignee (at issue)
Grass Valley (U.S.) Inc.
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.