Granted Patent
Utility
US 5,089,693 · App. 07/499,859
Reader/writer for arcuately flexed data cards
Inventor:
Richard M. Haddock
Patented Case
View Patent ↗
Granted: Feb 18, 1992
Filed: Mar 26, 1990
Inventor
Richard M. Haddock
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.