Granted Patent
Utility
US 4,878,720 · App. 07/128,868
Device for deflecting a bundle of light rays
Inventors:
Peter Hanke, Wie Postanschrift
Patented Case
View Patent ↗
Granted: Nov 7, 1989
Filed: Dec 4, 1987
Inventors
Peter Hanke
Wie Postanschrift
Assignee (at issue)
Optische Werke G. Rodenstock
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.