496191

Information

• Patent Grant
• 496191

• References
• Source

• Patent Number

  496,191

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1893
  131 years ago

• CPC

  • G11B3/08 - Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
  • Y10S200/34 - Recording and reproducing

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • 200 - Electricity: circuit makers and breakers