Granted Patent
Utility
US 4,609,812 · App. 06/774,576
Prerecorded dual strip data storage card
Inventor:
Jerome Drexler
Patented Case
View Patent ↗
Granted: Sep 2, 1986
Filed: Sep 10, 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.