US PATENT SUBCLASS 360 / 17
.~.~ With magnetic bias

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

15  DF  RECORD COPYING {1}
16  DF  .~ Contact transfer {1}
17.~.~ With magnetic bias

DEFINITION

Classification: 360/17

(under subclass 16) Subject matter wherein a magnetic field in addition to that of the record carrier to be copied is applied at the point of contact.