Granted Patent
Utility
US 4,892,783 · App. 07/269,467
Tri-element carbon based heat shield
Inventor:
James P. Brazel
Patented Case
View Patent ↗
Granted: Jan 9, 1990
Filed: Nov 10, 1988
Inventor
James P. Brazel
Assignee (at issue)
General Electric 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.