Granted Patent
Utility
US 6,378,561 · App. 09/792,331
Self-sealing flexible metal hose
Inventor:
R. Winfield Thomas
Patented Case
View Patent ↗
Granted: Apr 30, 2002
Filed: Feb 24, 2001
Inventor
R. Winfield Thomas
Assignee (at issue)
Tru-Flex Metal Hose, 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.