Granted Patent
Utility
US 4,840,567 · App. 07/026,108
Braille encoding method and display system
Inventor:
Timothe Litt
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Mar 16, 1987
Inventor
Timothe Litt
Assignee (at issue)
Digital Equipment 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.