Granted Patent
Utility
US 4,473,848 · App. 06/375,006
Light pick-up device
Inventor:
Heinrich Juergensen
Patented Case
View Patent ↗
Granted: Sep 25, 1984
Filed: May 5, 1982
Inventor
Heinrich Juergensen
Assignee (at issue)
Dr. Ing. Rudolf Hell 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.