Granted Patent
Utility
US 4,320,489 · App. 06/126,706
Reversible optical storage medium and a method for recording information therein
Inventors:
Richard S. Crandall, Allen Bloom
Patented Case
View Patent ↗
Granted: Mar 16, 1982
Filed: Mar 3, 1980
Inventors
Richard S. Crandall
Allen Bloom
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.