Granted Patent
Utility
US 6,575,659 · App. 09/500,275
Conical screw connection for multi-disk shaft couplings
Inventors:
Ewald Valtwies, Stefan Uhlen
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Feb 8, 2000
Inventors
Ewald Valtwies
Stefan Uhlen
Assignee (at issue)
Atec-Weiss GmbH & Co. KG
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.