Granted Patent
Utility
US 6,118,794 · App. 08/931,478
Digital signal processing apparatus for frequency demultiplexing or multiplexing
Inventors:
Paul Simon Cornfield, Alexander Walker Wishart
Patented Case
View Patent ↗
Granted: Sep 12, 2000
Filed: Sep 16, 1997
Inventors
Paul Simon Cornfield
Alexander Walker Wishart
Assignee (at issue)
Matra Marconi Space UK 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.