Granted Patent
Utility
US 4,474,073 · App. 06/207,979
Spindle drive assembly with recirculating balls
Inventors:
Gunter Blaurock, Ernst Albert
Patented Case
View Patent ↗
Granted: Oct 2, 1984
Filed: Nov 18, 1980
Inventors
Gunter Blaurock
Ernst Albert
Assignee (at issue)
Deutsche Star Kugelhalter 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.