US PATENT SUBCLASS 360 / 58
.~ Boundary displacement recording or transducers

Current as of: June, 1999
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360 /   HD   DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL

55  DF  GENERAL RECORDING OR REPRODUCING {8}
58.~ Boundary displacement recording or transducers

DEFINITION

Classification: 360/58

(under subclass 55) Subject matter including shifting the boundary between oppositely polarized regions of a record carrier in response to an information signal.