Granted Patent
Utility
US 5,174,205 · App. 07/639,199
Controller for spark discharge imaging
Inventors:
John F. Kline, Frank G. Pensavecchia, Stephen M. LaPonsey, Richard A. Williams
Patented Case
View Patent ↗
Granted: Dec 29, 1992
Filed: Jan 9, 1991
Inventors
John F. Kline
Frank G. Pensavecchia
Stephen M. LaPonsey
Richard A. Williams
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.