US PATENT SUBCLASS 360 / 57
.~ Selective erase recording

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

55  DF  GENERAL RECORDING OR REPRODUCING {8}
57.~ Selective erase recording

DEFINITION

Classification: 360/57

(under subclass 55) Subject matter including recording information by selectively erasing a prerecorded signal.