3687726

Information

• Patent Grant
• 3687726

• References
• Source

• Patent Number

  3,687,726

• Date Filed

  Not available

• Date Issued

  Tuesday, August 29, 1972
  52 years ago

• CPC

  • H01F1/0313 - Oxidic compounds
  • G11B5/70636 - CrO2
  • G11B5/712 - characterised by the surface treatment or coating of magnetic particles
  • Y10T428/2993 - Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 252 - Compositions
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER