Granted Patent
Utility
US 4,947,440 · App. 07/263,293
Shaping of automatic audio crossfade
Inventors:
Robert Bateman, Donald R. Christensen
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: Oct 27, 1988
Inventors
Robert Bateman
Donald R. Christensen
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.