Granted Patent
Utility
US 4,450,385 · App. 06/406,601
Inductive ballasting of direct current gas discharges
Inventor:
Carl F. Buhrer
Patented Case
View Patent ↗
Granted: May 22, 1984
Filed: Aug 9, 1982
Inventor
Carl F. Buhrer
Assignee (at issue)
GTE Laboratories Incorporated
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.