3729148

Information

• Patent Grant
• 3729148

• References
• Source

• Patent Number

  3,729,148

• Date Filed

  Not available

• Date Issued

  Tuesday, April 24, 1973
  51 years ago

• CPC

  • G11B15/58 - with vacuum column
  • H02P5/485 - using differential movement of the two motors

• US Classifications

  • 242 - Winding, tensioning, or guiding
  • 318 - Electricity: motive power systems
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER