Granted Patent
Utility
US 4,380,796 · App. 06/213,203
Portable control box for computer numerically controlled machine tools
Inventor:
Lyle D. Ostby
Patented Case
View Patent ↗
Granted: Apr 19, 1983
Filed: Dec 5, 1980
Inventor
Lyle D. Ostby
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.