Granted Patent
Utility
US 4,219,826 · App. 05/923,350
Optical recording medium
Inventors:
Allen Bloom, William J. Burke, Daniel Louis Ross
Patented Case
View Patent ↗
Granted: Aug 26, 1980
Filed: Jul 10, 1978
Inventors
Allen Bloom
William J. Burke
Daniel Louis Ross
Assignee (at issue)
RCA 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.