1643369

Information

• Patent Grant
• 1643369

• References
• Source

• Patent Number

  1,643,369

• Date Filed

  Not available

• Date Issued

  Tuesday, September 27, 1927
  97 years ago

• CPC

  • G11B3/0955 - using mechanical means for detecting the end of the recording

• US Classifications

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