Granted Patent
Utility
US 4,964,845 · App. 07/295,346
Minerals separator
Inventor:
Richard H. Mozley
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: Jan 10, 1989
Inventor
Richard H. Mozley
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.