Granted Patent
Utility
US 5,402,042 · App. 08/149,400
Method and apparatus for vacuum fluorescent display power supply
Inventor:
Wayne A. Madsen
Patented Case
View Patent ↗
Granted: Mar 28, 1995
Filed: Nov 9, 1993
Inventor
Wayne A. Madsen
Assignee (at issue)
DELCO ELECTRONICS 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.