Granted Patent
Utility
US 5,382,869 · App. 07/980,861
Lamp base inner shell
Inventors:
Glen P. Williamson, Donald W. Lilljedahl
Patented Case
View Patent ↗
Granted: Jan 17, 1995
Filed: Nov 24, 1992
Inventors
Glen P. Williamson
Donald W. Lilljedahl
Assignee (at issue)
OSRAM SYLVANIA 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.