Granted Patent
Utility
US 4,237,447 · App. 06/035,411
Speed independent selector switch for digital communication networks
Inventor:
Becky J. Clark
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: May 2, 1979
Inventor
Becky J. Clark
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.