Granted Patent
Utility
US 5,427,846 · App. 08/214,666
System for producing heat in alternating magnetic fields
Inventor:
Thomas H. McGaffigan
Patented Case
View Patent ↗
Granted: Jun 27, 1995
Filed: Mar 18, 1994
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.