Granted Patent
Utility
US 4,711,996 · App. 06/721,382
Redundant optical recording of information in different formats
Inventor:
Jerome Drexler
Patented Case
View Patent ↗
Granted: Dec 8, 1987
Filed: Apr 9, 1985
Inventor
Jerome Drexler
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.