Granted Patent
Utility
US 4,719,638 · App. 06/761,746
Discharge tube for a gas laser
Inventors:
Lee R. Carlson, Denes A. Hegedus
Patented Case
View Patent ↗
Granted: Jan 12, 1988
Filed: Aug 1, 1985
Inventors
Lee R. Carlson
Denes A. Hegedus
Assignee (at issue)
Spectra-Physics, 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.