741047

Information

• Patent Grant
• 741047

• References
• Source

• Patent Number

  741,047

• Date Filed

  Not available

• Date Issued

  Tuesday, October 13, 1903
  121 years ago

• CPC

  • G11B3/66 - Erasing information

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 369 - Dynamic information storage or retrieval