Granted Patent
Utility
US 6,525,475 · App. 09/919,018
SiO2-glass bulb with at least one current lead-in, process for producing a gas-tight connection between them, and their use in a gas-discharge lamp
Inventors:
Friedhold Scholz, David Francis Lupton, Jorg Schielke, Holger Zingg
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: Jul 31, 2001
Inventors
Friedhold Scholz
David Francis Lupton
Jorg Schielke
Holger Zingg
Assignee (at issue)
W.C. Heraeus GmbH & Co. KG
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.