Granted Patent
Utility
US 5,608,400 · App. 08/519,593
Selectable intermediate frequency sigma-delta analog-to-digital converter
Inventor:
Leopold E. Pellon
Patented Case
View Patent ↗
Granted: Mar 4, 1997
Filed: Aug 24, 1995
Inventor
Leopold E. Pellon
Assignee (at issue)
LOCKHEED MARTIN 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.