Granted Patent
Utility
US 5,729,084 · App. 08/002,286
Thermionic cathode with continuous bimetallic wall
Inventors:
John R. Hale, Jeffrey M. Farina, Philip J. Koehler, Nicholas Maropis
Patented Case
View Patent ↗
Granted: Mar 17, 1998
Filed: Jan 8, 1993
Inventors
John R. Hale
Jeffrey M. Farina
Philip J. Koehler
Nicholas Maropis
Assignee (at issue)
UTI LIMITED PARTNERSHIP
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.