Granted Patent
Utility
US 5,007,498 · App. 07/399,823
Driving assembly
Inventors:
Helmut Wiese, Paul-Erich Schonenbrecher
Patented Case
View Patent ↗
Granted: Apr 16, 1991
Filed: Aug 29, 1989
Inventors
Helmut Wiese
Paul-Erich Schonenbrecher
Assignee (at issue)
Viscodrive 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.