Granted Patent
Utility
US 4,952,899 · App. 07/331,517
Shunt holding means for ballasts
Inventors:
Robert A. Kulka, Raymond H. Van Wagener, Lothar Freimuth
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Mar 31, 1989
Inventors
Robert A. Kulka
Raymond H. Van Wagener
Lothar Freimuth
Assignee (at issue)
Magnetek Universal Mfg. Co.
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.