1448376

Information

• Patent Grant
• 1448376

• References
• Source

• Patent Number

  1,448,376

• Date Filed

  Not available

• Date Issued

  Tuesday, March 13, 1923
  101 years ago

• CPC

  • G11B3/66 - Erasing information

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 369 - Dynamic information storage or retrieval
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER