Granted Patent
Utility
US 6,389,198 · App. 09/854,154
Photonic crystal fiber system for sub-picosecond pulses
Inventors:
James D. Kafka, David E. Spence
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: May 11, 2001
Inventors
James D. Kafka
David E. Spence
Assignee (at issue)
Spectra Physics Lasers, 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.