Granted Patent
Utility
US 4,649,567 · App. 06/725,682
Dispatch overdialing for inter-group and other added calling/called access to communications channels in a trunked radio communications system
Inventor:
Jeffrey S. Childress
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Apr 22, 1985
Inventor
Jeffrey S. Childress
Assignee (at issue)
General Electric Company
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.