Granted Patent
Utility
US 4,528,275 · App. 06/616,748
Mullite-cordierite composite ceramic and method for preparation
Inventor:
James D. Hodge
Patented Case
View Patent ↗
Granted: Jul 9, 1985
Filed: Jun 4, 1984
Inventor
James D. Hodge
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.