3574683

Information

• Patent Grant
• 3574683

• References
• Source

• Patent Number

  3,574,683

• Date Filed

  Not available

• Date Issued

  Tuesday, April 13, 1971
  53 years ago

• CPC

  • H01F1/063 - with a non magnetic core
  • E21D11/105 - Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock
  • G11B5/706 - characterised by the composition of the magnetic material
  • H01F1/06 - in the form of particles
  • H01F1/065 - obtained by a reduction

• US Classifications

  • 427 - Coating processes
  • 075 - Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
  • 148 - Metal treatment
  • 423 - Chemistry of inorganic compounds
  • 556 - Organic compounds
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER