1405572

Information

• Patent Grant
• 1405572

• References
• Source

• Patent Number

  1,405,572

• Date Filed

  Not available

• Date Issued

  Tuesday, February 7, 1922
  103 years ago

• CPC

  • G11B15/40 - Driving record carriers otherwise than by electric motor

• US Classifications

  • 185 - Motors: spring, weight, or animal powered
  • 310 - Electrical generator or motor structure
  • 369 - Dynamic information storage or retrieval