Granted Patent
Utility
US 4,041,469 · App. 05/532,714
CRT key station which is responsive to centralized control
Inventor:
Alan K. Jennings
Patented Case
View Patent ↗
Granted: Aug 9, 1977
Filed: Dec 13, 1974
Inventor
Alan K. Jennings
Assignee (at issue)
Pertec 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.