Granted Patent
Utility
US 6,585,832 · App. 09/851,688
Method to prevent specks or hairline cracks in, and premature failure of, airplane cylinder barrels
Inventor:
Yoon Sam Kim
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: May 9, 2001
Inventor
Yoon Sam Kim
Assignee (at issue)
Textron Inc.
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.