Granted Patent
Utility
US 5,685,661 · App. 08/605,730
Rotation joint
Inventors:
Rudolf Marka, Uwe Gampe
Patented Case
View Patent ↗
Granted: Nov 11, 1997
Filed: Feb 22, 1996
Inventors
Rudolf Marka
Uwe Gampe
Assignee (at issue)
Heraeus Med 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.