Granted Patent
Utility
US 4,656,393 · App. 06/660,686
Metal-to-ceramic butt seal with improved mechanical properties
Inventor:
Kurt Amboss
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Oct 15, 1984
Inventor
Kurt Amboss
Assignee (at issue)
Hughes Aircraft Company
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.