Granted Patent
Utility
US 4,584,680 · App. 06/595,088
Use of a tone bus to provide polling and data distribution apparatus for communication system terminal groups
Inventors:
Nicholas Carter, Francisco A. Middleton, Santanu Das
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Mar 30, 1984
Inventors
Nicholas Carter
Francisco A. Middleton
Santanu Das
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.