Granted Patent
Utility
US 5,123,032 · App. 07/383,279
"Analog ""blue"" signal detector"
Inventors:
David L. Hershberger, Leon J. Stanger
Patented Case
View Patent ↗
Granted: Jun 16, 1992
Filed: Jul 20, 1989
Inventors
David L. Hershberger
Leon J. Stanger
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.