Granted Patent
Utility
US 4,889,979 · App. 06/896,991
Method for extending life of optically recorded information
Inventors:
Jerome Drexler, Eric W. Bouldin
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Aug 15, 1986
Inventors
Jerome Drexler
Eric W. Bouldin
Assignee (at issue)
Drexler Technology 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.