Granted Patent
Utility
US 6,648,340 · App. 10/020,131
Ring for fixing of sealing cover on ball joint
Inventor:
Walter Takeo Yagyu
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Dec 18, 2001
Inventor
Walter Takeo Yagyu
Assignee (at issue)
Dana Industrial S/A
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.