1887021

Information

• Patent Grant
• 1887021

• References
• Source

• Patent Number

  1,887,021

• Date Filed

  Not available

• Date Issued

  Tuesday, November 8, 1932
  92 years ago

• CPC

  • G11B3/5836 - means connected to the pick-up arm or head
  • Y10S29/069 - Fluid spreader contacts cutter

• US Classifications

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