Granted Patent
Utility
US 4,280,285 · App. 05/795,301
Simulator complex data transmission system having self-testing capabilities
Inventor:
Robert Haas
Patented Case
View Patent ↗
Granted: Jul 28, 1981
Filed: May 9, 1977
Inventor
Robert Haas
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.