1419238

Information

• Patent Grant
• 1419238

• References
• Source

• Patent Number

  1,419,238

• Date Filed

  Not available

• Date Issued

  Tuesday, June 13, 1922
  102 years ago

• CPC

  • G11B3/50 - Anvils or other supports opposing stylus forces

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER