Granted Patent
Utility
US 4,286,319 · App. 05/857,916
Expandable inter-computer communication system
Inventors:
Robert J. Membrino, Raphael R. Some, Van A. Quinn
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: Dec 6, 1977
Inventors
Robert J. Membrino
Raphael R. Some
Van A. Quinn
Assignee (at issue)
The Singer Company Limited
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.