Granted Patent
Utility
US 4,348,754 · App. 06/149,819
Digital delay for high quality audio use
Inventors:
David Lee Haynes, John Brennan
Patented Case
View Patent ↗
Granted: Sep 7, 1982
Filed: May 15, 1980
Inventors
David Lee Haynes
John Brennan
Assignee (at issue)
Ampex 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.