US PATENT SUBCLASS 360 / 78.15
.~.~.~.~ Drum

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

69  DF  AUTOMATIC CONTROL OF A RECORDER MECHANISM {3}
75  DF  .~ Controlling the head {3}
78.01  DF  .~.~ Track changing {2}
78.04  DF  .~.~.~ For rotary carrier (e.g., disc) {8}
78.15.~.~.~.~ Drum

DEFINITION

Classification: 360/78.15

Drum:

(under subclass 78.04) Subject matter wherein the transducer head moves between tracks on the curved surface of a cylindrical record carrier.