Granted Patent
Utility
US 6,518,692 · App. 09/999,109
Discharge device having cathode with micro hollow array
Inventors:
Karl H. Schoenbach, Wojciech W. Byszewski, Frank E. Peterkin, Amin N. Dharami
Patented Case
View Patent ↗
Granted: Feb 11, 2003
Filed: Oct 31, 2001
Inventors
Karl H. Schoenbach
Wojciech W. Byszewski
Frank E. Peterkin
Amin N. Dharami
Assignees (at issue)
Old Dominion University
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.