Granted Patent
Utility
US 5,987,871 · App. 09/112,903
Open-end spinning device with a spinning rotor
Inventor:
Lothar Winzen
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Jul 9, 1998
Inventor
Lothar Winzen
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.