Granted Patent
Utility
US 4,734,565 · App. 07/046,952
Read-only optical card and system
Inventors:
Gerald A. Pierce, James L. Buxton
Patented Case
View Patent ↗
Granted: Mar 29, 1988
Filed: May 6, 1987
Inventors
Gerald A. Pierce
James L. Buxton
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.