3854676

Information

• Patent Grant
• 3854676

• References
• Source

• Patent Number

  3,854,676

• Date Filed

  Not available

• Date Issued

  Tuesday, December 17, 1974
  50 years ago

• CPC

  • G11B15/54 - by stroboscope by tachometer
  • G11B15/446 - by driving the reels only

• US Classifications

  • 242 - Winding, tensioning, or guiding
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER