Apparatus Characterised By The Shape Of Record Carrier Employed But Not Specific To The Method Of Recording Or Reproducing (individual Parts Of Apparatus G9b/3 To G9b/23, G9b/33), [n: E.g. Dictating Apparatus; Combinations Of Such Apparatus] {g11b 25/00} Patents (Class G9B/25)
Cross-Reference Art Collections
- [N: using rotating discs] {G11B 25/04R} (Class G9B/25.003)
- [N: using stationary discs, or cards provided with a circular recording area (automatic feed mechanism producing a transducing t traverse of the head across stationary disc tracks G9B/21.009; driving heads relatively to stationary record carriers for mechanical transducing G9B/3.074)] {G11B 25/04S} (Class G9B/25.004)