Granted Patent
Utility
US 4,494,138 · App. 06/493,614
Segmented upstream management for cable television
Inventor:
Richard L. Shimp
Patented Case
View Patent ↗
Granted: Jan 15, 1985
Filed: May 11, 1983
Inventor
Richard L. Shimp
Assignee (at issue)
ComSonics, 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.