Granted Patent
Utility
US 4,240,847 · App. 05/954,049
Production of platinum group metal layer on a refractory
Inventor:
Max G. Chrisman
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Oct 23, 1978
Inventor
Max G. Chrisman
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.