Description
Class G11B : INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
Subclass 3/30: Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor (G11B 11/00 takes precedence) Arrangements of heads Arranging, supporting, or driving of heads or of transducers relatively to record carriers Supporting in inoperative position