Granted Patent
Utility
US 4,821,521 · App. 07/071,625
Positioning drive for a motor vehicle door closing device
Inventor:
Rolf Schüler
Patented Case
View Patent ↗
Granted: Apr 18, 1989
Filed: Jul 9, 1987
Inventor
Rolf Schüler
Assignee (at issue)
Kiekert GmbH & Co. Kommanditgesellschaft
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.