Granted Patent
Utility
US 5,722,549 · App. 08/650,245
Closed-loop tubular lamp envelope and method of manufacture
Inventors:
David Wentzel, Gregory Zaslavsky, Joseph V. Lima
Patented Case
View Patent ↗
Granted: Mar 3, 1998
Filed: May 22, 1996
Inventors
David Wentzel
Gregory Zaslavsky
Joseph V. Lima
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.