Granted Patent
Utility
US 4,242,689 · App. 05/834,271
Ablative optical recording medium
Inventors:
Allen Bloom, Alfred Bartolini
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Sep 19, 1977
Inventors
Allen Bloom
Alfred Bartolini
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.