Granted Patent
Utility
US 5,126,521 · App. 07/465,933
System for producing heat in alternating magnetic fields
Inventor:
Thomas H. McGaffigan
Patented Case
View Patent ↗
Granted: Jun 30, 1992
Filed: Jan 16, 1990
Inventor
Thomas H. McGaffigan
Assignee (at issue)
Metcal, Inc.
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.