1505307

Information

• Patent Grant
• 1505307

• References
• Source

• Patent Number

  1,505,307

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1924
  100 years ago

• CPC

  • G11B3/08567 - for pivoting pick-up arms
  • G11B17/16 - by mechanism in stationary centre post

• US Classifications

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