Granted Patent
Utility
US 4,937,963 · App. 07/275,150
Protective enclosure for data cards
Inventor:
Robert Barnes
Patented Case
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Granted: Jul 3, 1990
Filed: Nov 21, 1988
Inventor
Robert Barnes
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.