Granted Patent
Utility
US 5,721,774 · App. 08/573,616
Longitudinally balanced, dual voltage line-feed circuit
Inventor:
Richard Frank Stiefel
Patented Case
View Patent ↗
Granted: Feb 24, 1998
Filed: Dec 15, 1995
Inventor
Richard Frank Stiefel
Assignee (at issue)
LUCENT TECHNOLOGIES INC.
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.