2144844

Information

• Patent Grant
• 2144844

• References
• Source

• Patent Number

  2,144,844

• Date Filed

  Not available

• Date Issued

  Tuesday, January 24, 1939
  86 years ago

• CPC

  • G11B5/82 - Disc carriers
  • G10H3/08 - using inductive pick-up means
  • G10H3/09 - using tapes or wires
  • G11B25/043 - using rotating discs

• US Classifications

  • 360 - Dynamic magnetic information storage or retrieval
  • 029 - Metal working
  • 369 - Dynamic information storage or retrieval
  • 984 - Musical instruments
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER