3849661

Information

• Patent Grant
• 3849661

• References
• Source

• Patent Number

  3,849,661

• Date Filed

  Not available

• Date Issued

  Tuesday, November 19, 1974
  50 years ago

• CPC

  • G11B27/13 - the information being derived from movement of the record carrier
  • G11B15/448 - automatic reverse drive transfer therefor
  • G11B15/46 - Controlling, regulating, or indicating speed

• US Classifications

  • 250 - Radiant energy
  • 242 - Winding, tensioning, or guiding
  • 377 - Electrical pulse counters, pulse dividers, or shift registers: circuits and systems
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER