Granted Patent
Utility
US 4,249,173 · App. 06/075,588
Logic signals control system
Inventor:
James A. Lockhart, Jr.
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Sep 14, 1979
Inventor
James A. Lockhart, Jr.
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.