3828188

Information

• Patent Grant
• 3828188

• References
• Source

• Patent Number

  3,828,188

• Date Filed

  Not available

• Date Issued

  Tuesday, August 6, 1974
  50 years ago

• CPC

  • G11B15/43 - Control or regulation of mechanical tension of record carrier
  • G01D5/30 - the beams of light being detected by photocells
  • G03B1/54 - Tensionning or loop-maintaining devices

• US Classifications

  • 250 - Radiant energy
  • 340 - Communications: electrical
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER