Granted Patent
Utility
US 4,786,792 · App. 06/925,197
Transmissively read quad density optical data system
Inventors:
Gerald A. Pierce, James L. Buxton
Patented Case
View Patent ↗
Granted: Nov 22, 1988
Filed: Oct 31, 1986
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.