Granted Patent
Utility
US 5,917,779 · App. 08/842,636
Transformerless LED driving circuit
Inventors:
James M. Ralson, Gregory Jay Ramsey
Patented Case
View Patent ↗
Granted: Jun 29, 1999
Filed: Apr 16, 1997
Inventors
James M. Ralson
Gregory Jay Ramsey
Assignee (at issue)
Gabriel, 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.