Granted Patent
Utility
US 5,854,550 · App. 08/964,383
Transformerless digital-line battery feed circuit
Inventor:
Dieter J. H. Knollman
Patented Case
View Patent ↗
Granted: Dec 29, 1998
Filed: Nov 6, 1997
Inventor
Dieter J. H. Knollman
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.