Granted Patent
Utility
US 4,825,445 · App. 07/196,484
Flowing gas laser discharge tube structure
Inventors:
Dale E. Koop, Robert E. Basanese
Patented Case
View Patent ↗
Granted: Apr 25, 1989
Filed: May 19, 1988
Inventors
Dale E. Koop
Robert E. Basanese
Assignee (at issue)
Rofin-Sinar, 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.