(under subclass 209) Subject matter including means for magnetizing or demagnetizing magnets or electromagnets.
SEE OR SEARCH CLASS
29, Metal Working,
607+, for methods of making permanent magnets not elsewhere classified.
307, Electrical Transmission or Interconnection Systems,
101, for control or removal of residual or permanent magnetism.
324, Electricity: Measuring and Testing, 200, for magnetic testing and measuring.
361, Electricity: Electrical Systems and Devices,
143+, for control circuits for electromagnetic devices including magnetizing or demagnetizing the magnetic field, and subclass 267 for demagnetizing systems and processes.
