Granted Patent
Utility
US 4,966,633 · App. 07/371,186
Coercivity in hot worked iron-neodymium boron type permanent magnets
Inventor:
Earl G. Brewer
Patented Case
View Patent ↗
Granted: Oct 30, 1990
Filed: Jun 26, 1989
Inventor
Earl G. Brewer
Assignee (at issue)
General Motors LLC
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.