Granted Patent
Utility
US 4,425,476 · App. 06/251,512
Progressively fused ceramic seals between spaced members such as a terminal pin and a ferrule
Inventor:
James C. Kyle
Patented Case
View Patent ↗
Granted: Jan 10, 1984
Filed: Apr 6, 1981
Inventor
James C. Kyle
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.