Granted Patent
Utility
US 4,927,285 · App. 07/353,170
Ball joint design
Inventors:
Steven P. Kotz, John H. Lane
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: May 15, 1989
Inventors
Steven P. Kotz
John H. Lane
Assignee (at issue)
The Pullman Company LLC
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.