Granted Patent
Utility
US 6,452,977 · App. 09/153,637
Method and apparatus for AM compatible digital broadcasting
Inventors:
Don Roy Goldston, David Carl Hartup, Marcus Matherne
Patented Case
View Patent ↗
Granted: Sep 17, 2002
Filed: Sep 15, 1998
Inventors
Don Roy Goldston
David Carl Hartup
Marcus Matherne
Assignee (at issue)
iBiquity Digital Corporation
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.