with means for detecting the diameter of the record

Patents Grantslast 30 patents

  • Information Patent Grant

    Record changer

    • Patent number 4,412,321
    • Issue date Oct 25, 1983
    • Sony Corporation
    • Shunji Tokumitsu
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    3671045

    • Patent number 3,671,045
    • Issue date Jun 20, 1972
    • G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents