Granted Patent
Utility
US 4,674,482 · App. 06/842,520
Pulse electro-magnetic field therapy device with auto bias circuit
Inventors:
James R. Waltonen, Larry L. Bauer
Patented Case
View Patent ↗
Granted: Jun 23, 1987
Filed: Mar 17, 1986
Inventors
James R. Waltonen
Larry L. Bauer
Assignee (at issue)
IRT & Associates, 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.