Granted Patent
Utility
US 5,939,829 · App. 08/901,195
Discharge device having cathode with micro hollow array
Inventors:
Karl H. Schoenbach, Wojciech W. Byszewski, Frank E. Peterkin, Amin N. Dharamsi
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Jul 28, 1997
Inventors
Karl H. Schoenbach
Wojciech W. Byszewski
Frank E. Peterkin
Amin N. Dharamsi
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.