Granted Patent
Utility
US 4,314,097 · App. 06/128,667
Authenticator device for precluding compensating text modifications in transmitted messages
Inventor:
Carl M. Campbell
Patented Case
View Patent ↗
Granted: Feb 2, 1982
Filed: Mar 10, 1980
Inventor
Carl M. Campbell
Assignee (at issue)
Burroughs, Inc.
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.