Granted Patent
Utility
US 5,272,008 · App. 07/852,426
Encapsulated oxidation-resistant iron-neodymium-boron permanent magnet
Inventors:
Jon C. Shain, David E. Gay
Patented Case
View Patent ↗
Granted: Dec 21, 1993
Filed: Mar 16, 1992
Inventors
Jon C. Shain
David E. Gay
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.