Granted Patent
Utility
US 4,244,744 · App. 06/064,312
Refractory gun mix
Inventor:
Nicholas Cassens, Jr.
Patented Case
View Patent ↗
Granted: Jan 13, 1981
Filed: Aug 6, 1979
Inventor
Nicholas Cassens, Jr.
Assignee (at issue)
Kaiser Aluminum & Chemical Corporation
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.