Granted Patent
Utility
US 4,390,953 · App. 06/281,019
Unmanned diagnostic communications system for computer controlled machine tools
Inventor:
Richard Johnstone
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Jul 6, 1981
Inventor
Richard Johnstone
Assignee (at issue)
Kearney & Trecker 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.