Granted Patent
Utility
US 6,340,855 · App. 09/512,561
Bearing a spinning rotor of an open-end spinning apparatus
Inventors:
Heinz-Georg Wassenhoven, Bert Schlomer
Patented Case
View Patent ↗
Granted: Jan 22, 2002
Filed: Feb 24, 2000
Inventors
Heinz-Georg Wassenhoven
Bert Schlomer
Assignee (at issue)
W. Schlafhorst AG & Co.
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.