Granted Patent
Utility
US 6,072,273 · App. 09/310,817
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: Jun 6, 2000
Filed: May 12, 1999
Inventors
Karl H. Schoenbach
Wojciech W. Byszewski
Frank E. Peterkin
Amin N. Dharamsi
Assignees (at issue)
OSRAM SYLVANIA Inc.
Old Dominion University
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.