Granted Patent
Utility
US 4,796,242 · App. 06/628,729
Scanning optical card reader
Inventor:
Gerald A. Pierce
Patented Case
View Patent ↗
Granted: Jan 3, 1989
Filed: Jul 9, 1984
Inventor
Gerald A. Pierce
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.