Granted Patent
Utility
US 4,917,292 · App. 07/179,011
Book on a pocket card
Inventor:
Jerome Drexler
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Apr 21, 1988
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.