Granted Patent
Utility
US 4,680,459 · App. 06/798,146
Updatable micrographic pocket data card
Inventor:
Jerome Drexler
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Nov 14, 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.