Granted Patent
Utility
US 4,812,613 · App. 07/143,965
Beam guiding optical system for laser radiation
Inventor:
Wolfram Gorisch
Patented Case
View Patent ↗
Granted: Mar 14, 1989
Filed: Jan 13, 1988
Inventor
Wolfram Gorisch
Assignee (at issue)
W. C. Heraeus GmbH
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.