Granted Patent
Utility
US 4,453,767 · App. 06/298,755
Hinge, particularly for seats with adjustable backs
Inventors:
Hansjorg Walk, Wilhelm Wingensiefen
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Sep 2, 1981
Inventors
Hansjorg Walk
Wilhelm Wingensiefen
Assignee (at issue)
Keiper Automobiltechnik 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.