Granted Patent
Utility
US 4,685,104 · App. 06/706,320
Distributed switching system
Inventors:
Charles B. Johnson, Jeffrey L. Box, David B. Hildebrand
Patented Case
View Patent ↗
Granted: Aug 4, 1987
Filed: Feb 27, 1985
Inventors
Charles B. Johnson
Jeffrey L. Box
David B. Hildebrand
Assignee (at issue)
SRX 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.