Granted Patent
Utility
US 5,018,136 · App. 07/579,189
Multiplexed digital packet telephone system
Inventor:
Raphael Gollub
Patented Case
View Patent ↗
Granted: May 21, 1991
Filed: Sep 5, 1990
Inventor
Raphael Gollub
Assignee (at issue)
Republic Telcom Systems 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.