Granted Patent
Utility
US 4,400,765 · App. 06/235,695
Operating room light fixture with adjustable light pattern
Inventor:
Winfried Kochem
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Feb 18, 1981
Inventor
Winfried Kochem
Assignee (at issue)
Original Hanau 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.