Granted Patent
Utility
US 6,287,040 · App. 09/181,443
Ball-and-socket joint
Inventor:
Markus Fischer
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Oct 28, 1998
Inventor
Markus Fischer
Assignee (at issue)
ZF Lemförder Metallwaren AG
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.