Granted Patent
Utility
US 4,246,313 · App. 06/002,831
Heat-resistant composite material and method of making same
Inventor:
Edward J. Stengle, Jr.
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Jan 12, 1979
Inventor
Edward J. Stengle, Jr.
Assignee (at issue)
Owens-Illinois 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.