Granted Patent
Utility
US 4,672,602 · App. 06/667,789
Control and routing system
Inventors:
Franklin Hargrave, Francisco A. Middleton
Patented Case
View Patent ↗
Granted: Jun 9, 1987
Filed: Nov 2, 1984
Inventors
Franklin Hargrave
Francisco A. Middleton
Assignee (at issue)
ITT 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.