Granted Patent
Utility
US 6,641,449 · App. 09/841,424
High pressure lamp bulb and method of induction sealing
Inventors:
David W. Johnston, Ernest Davey, Gregory Zaslavsky, Dana Caldwell
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Apr 24, 2001
Inventors
David W. Johnston
Ernest Davey
Gregory Zaslavsky
Dana Caldwell
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.