Granted Patent
Utility
US 4,814,594 · App. 07/070,837
Updatable micrographic pocket data card
Inventor:
Jerome Drexler
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Jul 7, 1987
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.