Granted Patent
Utility
US 4,887,280 · App. 06/947,256
System for detecting the presence of a signal of a particular data rate
Inventor:
Sam Reisenfeld
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Dec 29, 1986
Inventor
Sam Reisenfeld
Assignee (at issue)
Hughes Aircraft Company
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.