Granted Patent
Utility
US 4,633,227 · App. 06/559,128
Programmable keyboard for a typewriter or similar article
Inventor:
Walter A. Menn
Patented Case
View Patent ↗
Granted: Dec 30, 1986
Filed: Dec 7, 1983
Inventor
Walter A. Menn
Assignee (at issue)
ITT 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.